Home / 87,219,429.60-130,687,426.80-72,764,234.40

Finding the Fourth Proportional to 87,219,429.60, 130,687,426.80 and 72,764,234.40

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Solution

The fourth proportional to 87,219,429.60, 130,687,426.80 and 72,764,234.40 is: 109,028,121.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,219,429.60 : 130,687,426.80 = 72,764,234.40 : x
  2. Step 2: Convert to fraction form
    87,219,429.60/130,687,426.80 = 72,764,234.40/x
  3. Step 3: Cross multiply
    87,219,429.60x = 130,687,426.80 × 72,764,234.40
  4. Step 4: Simplify right side
    87,219,429.60x = 9,509,370,556,808,042
  5. Step 5: Solve for x
    x = 9,509,370,556,808,042/87,219,429.60
  6. Step 6: Final answer
    x = 109,028,121.38

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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.