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Finding the Fourth Proportional to 87,008.92, 120,089.58 and 56,799.16

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Solution

The fourth proportional to 87,008.92, 120,089.58 and 56,799.16 is: 78,394.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,008.92 : 120,089.58 = 56,799.16 : x
  2. Step 2: Convert to fraction form
    87,008.92/120,089.58 = 56,799.16/x
  3. Step 3: Cross multiply
    87,008.92x = 120,089.58 × 56,799.16
  4. Step 4: Simplify right side
    87,008.92x = 6,820,987,268.75
  5. Step 5: Solve for x
    x = 6,820,987,268.75/87,008.92
  6. Step 6: Final answer
    x = 78,394.11

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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.