Home / 77,873,721.57-116,801,659.40-20,371,542.93

Finding the Fourth Proportional to 77,873,721.57, 116,801,659.40 and 20,371,542.93

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Solution

The fourth proportional to 77,873,721.57, 116,801,659.40 and 20,371,542.93 is: 30,554,980.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,873,721.57 : 116,801,659.40 = 20,371,542.93 : x
  2. Step 2: Convert to fraction form
    77,873,721.57/116,801,659.40 = 20,371,542.93/x
  3. Step 3: Cross multiply
    77,873,721.57x = 116,801,659.40 × 20,371,542.93
  4. Step 4: Simplify right side
    77,873,721.57x = 2,379,430,018,660,480
  5. Step 5: Solve for x
    x = 2,379,430,018,660,480/77,873,721.57
  6. Step 6: Final answer
    x = 30,554,980.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.