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Finding the Fourth Proportional to 40,499.35, 60,744.80 and 10,915.38

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Solution

The fourth proportional to 40,499.35, 60,744.80 and 10,915.38 is: 16,371.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,499.35 : 60,744.80 = 10,915.38 : x
  2. Step 2: Convert to fraction form
    40,499.35/60,744.80 = 10,915.38/x
  3. Step 3: Cross multiply
    40,499.35x = 60,744.80 × 10,915.38
  4. Step 4: Simplify right side
    40,499.35x = 663,052,602.31
  5. Step 5: Solve for x
    x = 663,052,602.31/40,499.35
  6. Step 6: Final answer
    x = 16,371.93

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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.