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Finding the Fourth Proportional to 65,867,001.04, 90,866,653.50 and 39,753,171.28

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Solution

The fourth proportional to 65,867,001.04, 90,866,653.50 and 39,753,171.28 is: 54,841,386.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,867,001.04 : 90,866,653.50 = 39,753,171.28 : x
  2. Step 2: Convert to fraction form
    65,867,001.04/90,866,653.50 = 39,753,171.28/x
  3. Step 3: Cross multiply
    65,867,001.04x = 90,866,653.50 × 39,753,171.28
  4. Step 4: Simplify right side
    65,867,001.04x = 3,612,237,640,225,911.50
  5. Step 5: Solve for x
    x = 3,612,237,640,225,911.50/65,867,001.04
  6. Step 6: Final answer
    x = 54,841,386.18

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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.