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Finding the Fourth Proportional to 61,207,471.80, 91,811,207.70 and 53,235,856.80

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Solution

The fourth proportional to 61,207,471.80, 91,811,207.70 and 53,235,856.80 is: 79,853,785.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,207,471.80 : 91,811,207.70 = 53,235,856.80 : x
  2. Step 2: Convert to fraction form
    61,207,471.80/91,811,207.70 = 53,235,856.80/x
  3. Step 3: Cross multiply
    61,207,471.80x = 91,811,207.70 × 53,235,856.80
  4. Step 4: Simplify right side
    61,207,471.80x = 4,887,648,305,752,257
  5. Step 5: Solve for x
    x = 4,887,648,305,752,257/61,207,471.80
  6. Step 6: Final answer
    x = 79,853,785.20

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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.