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Finding the Fourth Proportional to 87,008.96, 130,485.90 and 53,679.08

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Solution

The fourth proportional to 87,008.96, 130,485.90 and 53,679.08 is: 80,501.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,008.96 : 130,485.90 = 53,679.08 : x
  2. Step 2: Convert to fraction form
    87,008.96/130,485.90 = 53,679.08/x
  3. Step 3: Cross multiply
    87,008.96x = 130,485.90 × 53,679.08
  4. Step 4: Simplify right side
    87,008.96x = 7,004,363,064.97
  5. Step 5: Solve for x
    x = 7,004,363,064.97/87,008.96
  6. Step 6: Final answer
    x = 80,501.63

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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.