Home / 28,078,952.40-42,126,301.80-11,912,648.40

Finding the Fourth Proportional to 28,078,952.40, 42,126,301.80 and 11,912,648.40

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Solution

The fourth proportional to 28,078,952.40, 42,126,301.80 and 11,912,648.40 is: 17,872,312.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,078,952.40 : 42,126,301.80 = 11,912,648.40 : x
  2. Step 2: Convert to fraction form
    28,078,952.40/42,126,301.80 = 11,912,648.40/x
  3. Step 3: Cross multiply
    28,078,952.40x = 42,126,301.80 × 11,912,648.40
  4. Step 4: Simplify right side
    28,078,952.40x = 501,835,821,735,687.12
  5. Step 5: Solve for x
    x = 501,835,821,735,687.12/28,078,952.40
  6. Step 6: Final answer
    x = 17,872,312.85

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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.