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Finding the Fourth Proportional to 40,578.48, 60,866.12 and 18,391.76

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Solution

The fourth proportional to 40,578.48, 60,866.12 and 18,391.76 is: 27,586.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,578.48 : 60,866.12 = 18,391.76 : x
  2. Step 2: Convert to fraction form
    40,578.48/60,866.12 = 18,391.76/x
  3. Step 3: Cross multiply
    40,578.48x = 60,866.12 × 18,391.76
  4. Step 4: Simplify right side
    40,578.48x = 1,119,435,071.17
  5. Step 5: Solve for x
    x = 1,119,435,071.17/40,578.48
  6. Step 6: Final answer
    x = 27,586.91

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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.