Home / 78,700,218.12-108,614,811.06-47,761,691.40

Finding the Fourth Proportional to 78,700,218.12, 108,614,811.06 and 47,761,691.40

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Solution

The fourth proportional to 78,700,218.12, 108,614,811.06 and 47,761,691.40 is: 65,916,298.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,700,218.12 : 108,614,811.06 = 47,761,691.40 : x
  2. Step 2: Convert to fraction form
    78,700,218.12/108,614,811.06 = 47,761,691.40/x
  3. Step 3: Cross multiply
    78,700,218.12x = 108,614,811.06 × 47,761,691.40
  4. Step 4: Simplify right side
    78,700,218.12x = 5,187,627,087,317,027
  5. Step 5: Solve for x
    x = 5,187,627,087,317,027/78,700,218.12
  6. Step 6: Final answer
    x = 65,916,298.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.