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Finding the Fourth Proportional to 60,322.56, 90,492.16 and 20,869.12

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Solution

The fourth proportional to 60,322.56, 90,492.16 and 20,869.12 is: 31,306.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,322.56 : 90,492.16 = 20,869.12 : x
  2. Step 2: Convert to fraction form
    60,322.56/90,492.16 = 20,869.12/x
  3. Step 3: Cross multiply
    60,322.56x = 90,492.16 × 20,869.12
  4. Step 4: Simplify right side
    60,322.56x = 1,888,491,746.10
  5. Step 5: Solve for x
    x = 1,888,491,746.10/60,322.56
  6. Step 6: Final answer
    x = 31,306.56

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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.