Home / 87,219,434.60-130,687,434.30-72,764,239.40

Finding the Fourth Proportional to 87,219,434.60, 130,687,434.30 and 72,764,239.40

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Solution

The fourth proportional to 87,219,434.60, 130,687,434.30 and 72,764,239.40 is: 109,028,128.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,219,434.60 : 130,687,434.30 = 72,764,239.40 : x
  2. Step 2: Convert to fraction form
    87,219,434.60/130,687,434.30 = 72,764,239.40/x
  3. Step 3: Cross multiply
    87,219,434.60x = 130,687,434.30 × 72,764,239.40
  4. Step 4: Simplify right side
    87,219,434.60x = 9,509,371,755,976,972
  5. Step 5: Solve for x
    x = 9,509,371,755,976,972/87,219,434.60
  6. Step 6: Final answer
    x = 109,028,128.88

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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.