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Finding the Fourth Proportional to 87,316.92, 120,444.84 and 53,309.88

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Solution

The fourth proportional to 87,316.92, 120,444.84 and 53,309.88 is: 73,535.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,316.92 : 120,444.84 = 53,309.88 : x
  2. Step 2: Convert to fraction form
    87,316.92/120,444.84 = 53,309.88/x
  3. Step 3: Cross multiply
    87,316.92x = 120,444.84 × 53,309.88
  4. Step 4: Simplify right side
    87,316.92x = 6,420,899,967.02
  5. Step 5: Solve for x
    x = 6,420,899,967.02/87,316.92
  6. Step 6: Final answer
    x = 73,535.58

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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.