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Finding the Fourth Proportional to 40,357.41, 60,545.84 and 12,655.41

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Solution

The fourth proportional to 40,357.41, 60,545.84 and 12,655.41 is: 18,986.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,357.41 : 60,545.84 = 12,655.41 : x
  2. Step 2: Convert to fraction form
    40,357.41/60,545.84 = 12,655.41/x
  3. Step 3: Cross multiply
    40,357.41x = 60,545.84 × 12,655.41
  4. Step 4: Simplify right side
    40,357.41x = 766,232,428.99
  5. Step 5: Solve for x
    x = 766,232,428.99/40,357.41
  6. Step 6: Final answer
    x = 18,986.16

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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.