Home / 81,024.10-121,572.60-28,471.30

Finding the Fourth Proportional to 81,024.10, 121,572.60 and 28,471.30

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Solution

The fourth proportional to 81,024.10, 121,572.60 and 28,471.30 is: 42,719.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,024.10 : 121,572.60 = 28,471.30 : x
  2. Step 2: Convert to fraction form
    81,024.10/121,572.60 = 28,471.30/x
  3. Step 3: Cross multiply
    81,024.10x = 121,572.60 × 28,471.30
  4. Step 4: Simplify right side
    81,024.10x = 3,461,329,966.38
  5. Step 5: Solve for x
    x = 3,461,329,966.38/81,024.10
  6. Step 6: Final answer
    x = 42,719.76

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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.