Home / 78,624,005.10-117,936,007.65-55,665,753.90

Finding the Fourth Proportional to 78,624,005.10, 117,936,007.65 and 55,665,753.90

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Solution

The fourth proportional to 78,624,005.10, 117,936,007.65 and 55,665,753.90 is: 83,498,630.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,624,005.10 : 117,936,007.65 = 55,665,753.90 : x
  2. Step 2: Convert to fraction form
    78,624,005.10/117,936,007.65 = 55,665,753.90/x
  3. Step 3: Cross multiply
    78,624,005.10x = 117,936,007.65 × 55,665,753.90
  4. Step 4: Simplify right side
    78,624,005.10x = 6,564,996,777,793,417
  5. Step 5: Solve for x
    x = 6,564,996,777,793,417/78,624,005.10
  6. Step 6: Final answer
    x = 83,498,630.85

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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.