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Finding the Fourth Proportional to 86,417.40, 129,480.30 and 41,948.40

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Solution

The fourth proportional to 86,417.40, 129,480.30 and 41,948.40 is: 62,851.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,417.40 : 129,480.30 = 41,948.40 : x
  2. Step 2: Convert to fraction form
    86,417.40/129,480.30 = 41,948.40/x
  3. Step 3: Cross multiply
    86,417.40x = 129,480.30 × 41,948.40
  4. Step 4: Simplify right side
    86,417.40x = 5,431,491,416.52
  5. Step 5: Solve for x
    x = 5,431,491,416.52/86,417.40
  6. Step 6: Final answer
    x = 62,851.83

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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.