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Finding the Fourth Proportional to 67,398,906.80, 101,098,360.20 and 64,753,511.60

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Solution

The fourth proportional to 67,398,906.80, 101,098,360.20 and 64,753,511.60 is: 97,130,267.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,398,906.80 : 101,098,360.20 = 64,753,511.60 : x
  2. Step 2: Convert to fraction form
    67,398,906.80/101,098,360.20 = 64,753,511.60/x
  3. Step 3: Cross multiply
    67,398,906.80x = 101,098,360.20 × 64,753,511.60
  4. Step 4: Simplify right side
    67,398,906.80x = 6,546,473,839,951,679
  5. Step 5: Solve for x
    x = 6,546,473,839,951,679/67,398,906.80
  6. Step 6: Final answer
    x = 97,130,267.40

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1.5x scale

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.