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Finding the Fourth Proportional to 87,160.60, 130,827.30 and 42,837.40

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Solution

The fourth proportional to 87,160.60, 130,827.30 and 42,837.40 is: 64,298.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,160.60 : 130,827.30 = 42,837.40 : x
  2. Step 2: Convert to fraction form
    87,160.60/130,827.30 = 42,837.40/x
  3. Step 3: Cross multiply
    87,160.60x = 130,827.30 × 42,837.40
  4. Step 4: Simplify right side
    87,160.60x = 5,604,301,381.02
  5. Step 5: Solve for x
    x = 5,604,301,381.02/87,160.60
  6. Step 6: Final answer
    x = 64,298.56

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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.