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Finding the Fourth Proportional to 40,490.16, 60,715.80 and 22,955.28

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Solution

The fourth proportional to 40,490.16, 60,715.80 and 22,955.28 is: 34,421.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,490.16 : 60,715.80 = 22,955.28 : x
  2. Step 2: Convert to fraction form
    40,490.16/60,715.80 = 22,955.28/x
  3. Step 3: Cross multiply
    40,490.16x = 60,715.80 × 22,955.28
  4. Step 4: Simplify right side
    40,490.16x = 1,393,748,189.42
  5. Step 5: Solve for x
    x = 1,393,748,189.42/40,490.16
  6. Step 6: Final answer
    x = 34,421.90

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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.