Home / 87,591.08-120,869.34-53,605.10

Finding the Fourth Proportional to 87,591.08, 120,869.34 and 53,605.10

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Solution

The fourth proportional to 87,591.08, 120,869.34 and 53,605.10 is: 73,971.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,591.08 : 120,869.34 = 53,605.10 : x
  2. Step 2: Convert to fraction form
    87,591.08/120,869.34 = 53,605.10/x
  3. Step 3: Cross multiply
    87,591.08x = 120,869.34 × 53,605.10
  4. Step 4: Simplify right side
    87,591.08x = 6,479,213,057.63
  5. Step 5: Solve for x
    x = 6,479,213,057.63/87,591.08
  6. Step 6: Final answer
    x = 73,971.15

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1.5x scale

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.