Home / 81,084,701.70-121,627,052.55-65,779,200.90

Finding the Fourth Proportional to 81,084,701.70, 121,627,052.55 and 65,779,200.90

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Solution

The fourth proportional to 81,084,701.70, 121,627,052.55 and 65,779,200.90 is: 98,668,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,084,701.70 : 121,627,052.55 = 65,779,200.90 : x
  2. Step 2: Convert to fraction form
    81,084,701.70/121,627,052.55 = 65,779,200.90/x
  3. Step 3: Cross multiply
    81,084,701.70x = 121,627,052.55 × 65,779,200.90
  4. Step 4: Simplify right side
    81,084,701.70x = 8,000,530,324,561,307
  5. Step 5: Solve for x
    x = 8,000,530,324,561,307/81,084,701.70
  6. Step 6: Final answer
    x = 98,668,801.35

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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.