Home / 39,875,892,605.51-55,028,897,590.29-21,564,950,281.26

Finding the Fourth Proportional to 39,875,892,605.51, 55,028,897,590.29 and 21,564,950,281.26

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Solution

The fourth proportional to 39,875,892,605.51, 55,028,897,590.29 and 21,564,950,281.26 is: 29,759,721,050.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,875,892,605.51 : 55,028,897,590.29 = 21,564,950,281.26 : x
  2. Step 2: Convert to fraction form
    39,875,892,605.51/55,028,897,590.29 = 21,564,950,281.26/x
  3. Step 3: Cross multiply
    39,875,892,605.51x = 55,028,897,590.29 × 21,564,950,281.26
  4. Step 4: Simplify right side
    39,875,892,605.51x = 1,186,695,440,566,900,752,384
  5. Step 5: Solve for x
    x = 1,186,695,440,566,900,752,384/39,875,892,605.51
  6. Step 6: Final answer
    x = 29,759,721,050.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.