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Finding the Fourth Proportional to 84,581,657.60, 126,872,486.40 and 57,707,801.60

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Solution

The fourth proportional to 84,581,657.60, 126,872,486.40 and 57,707,801.60 is: 86,561,702.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,581,657.60 : 126,872,486.40 = 57,707,801.60 : x
  2. Step 2: Convert to fraction form
    84,581,657.60/126,872,486.40 = 57,707,801.60/x
  3. Step 3: Cross multiply
    84,581,657.60x = 126,872,486.40 × 57,707,801.60
  4. Step 4: Simplify right side
    84,581,657.60x = 7,321,532,273,669,899
  5. Step 5: Solve for x
    x = 7,321,532,273,669,899/84,581,657.60
  6. Step 6: Final answer
    x = 86,561,702.40

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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.