Home / 87,082.13-130,681.45-31,678.13

Finding the Fourth Proportional to 87,082.13, 130,681.45 and 31,678.13

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Solution

The fourth proportional to 87,082.13, 130,681.45 and 31,678.13 is: 47,538.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,082.13 : 130,681.45 = 31,678.13 : x
  2. Step 2: Convert to fraction form
    87,082.13/130,681.45 = 31,678.13/x
  3. Step 3: Cross multiply
    87,082.13x = 130,681.45 × 31,678.13
  4. Step 4: Simplify right side
    87,082.13x = 4,139,743,961.69
  5. Step 5: Solve for x
    x = 4,139,743,961.69/87,082.13
  6. Step 6: Final answer
    x = 47,538.39

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1.5x scale

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.