Home / 78,917,551.20-118,250,355.60-66,068,488.80

Finding the Fourth Proportional to 78,917,551.20, 118,250,355.60 and 66,068,488.80

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Solution

The fourth proportional to 78,917,551.20, 118,250,355.60 and 66,068,488.80 is: 98,997,272.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,917,551.20 : 118,250,355.60 = 66,068,488.80 : x
  2. Step 2: Convert to fraction form
    78,917,551.20/118,250,355.60 = 66,068,488.80/x
  3. Step 3: Cross multiply
    78,917,551.20x = 118,250,355.60 × 66,068,488.80
  4. Step 4: Simplify right side
    78,917,551.20x = 7,812,622,294,554,617
  5. Step 5: Solve for x
    x = 7,812,622,294,554,617/78,917,551.20
  6. Step 6: Final answer
    x = 98,997,272.16

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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.