Home / 86,070.31-129,105.20-22,890.38

Finding the Fourth Proportional to 86,070.31, 129,105.20 and 22,890.38

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Solution

The fourth proportional to 86,070.31, 129,105.20 and 22,890.38 is: 34,335.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,070.31 : 129,105.20 = 22,890.38 : x
  2. Step 2: Convert to fraction form
    86,070.31/129,105.20 = 22,890.38/x
  3. Step 3: Cross multiply
    86,070.31x = 129,105.20 × 22,890.38
  4. Step 4: Simplify right side
    86,070.31x = 2,955,266,471.06
  5. Step 5: Solve for x
    x = 2,955,266,471.06/86,070.31
  6. Step 6: Final answer
    x = 34,335.49

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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.