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Finding the Fourth Proportional to 87,010.96, 130,488.90 and 53,681.08

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Solution

The fourth proportional to 87,010.96, 130,488.90 and 53,681.08 is: 80,504.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,010.96 : 130,488.90 = 53,681.08 : x
  2. Step 2: Convert to fraction form
    87,010.96/130,488.90 = 53,681.08/x
  3. Step 3: Cross multiply
    87,010.96x = 130,488.90 × 53,681.08
  4. Step 4: Simplify right side
    87,010.96x = 7,004,785,080.01
  5. Step 5: Solve for x
    x = 7,004,785,080.01/87,010.96
  6. Step 6: Final answer
    x = 80,504.63

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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.