Home / 87,280.32-120,458.08-53,281.68

Finding the Fourth Proportional to 87,280.32, 120,458.08 and 53,281.68

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Solution

The fourth proportional to 87,280.32, 120,458.08 and 53,281.68 is: 73,535.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,280.32 : 120,458.08 = 53,281.68 : x
  2. Step 2: Convert to fraction form
    87,280.32/120,458.08 = 53,281.68/x
  3. Step 3: Cross multiply
    87,280.32x = 120,458.08 × 53,281.68
  4. Step 4: Simplify right side
    87,280.32x = 6,418,208,871.97
  5. Step 5: Solve for x
    x = 6,418,208,871.97/87,280.32
  6. Step 6: Final answer
    x = 73,535.58

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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.