Home / 87,330.76-130,983.38-42,945.60

Finding the Fourth Proportional to 87,330.76, 130,983.38 and 42,945.60

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Solution

The fourth proportional to 87,330.76, 130,983.38 and 42,945.60 is: 64,412.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,330.76 : 130,983.38 = 42,945.60 : x
  2. Step 2: Convert to fraction form
    87,330.76/130,983.38 = 42,945.60/x
  3. Step 3: Cross multiply
    87,330.76x = 130,983.38 × 42,945.60
  4. Step 4: Simplify right side
    87,330.76x = 5,625,159,844.13
  5. Step 5: Solve for x
    x = 5,625,159,844.13/87,330.76
  6. Step 6: Final answer
    x = 64,412.13

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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.