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Finding the Fourth Proportional to 40,511.95, 60,749.70 and 15,543.70

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Solution

The fourth proportional to 40,511.95, 60,749.70 and 15,543.70 is: 23,308.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,511.95 : 60,749.70 = 15,543.70 : x
  2. Step 2: Convert to fraction form
    40,511.95/60,749.70 = 15,543.70/x
  3. Step 3: Cross multiply
    40,511.95x = 60,749.70 × 15,543.70
  4. Step 4: Simplify right side
    40,511.95x = 944,275,111.89
  5. Step 5: Solve for x
    x = 944,275,111.89/40,511.95
  6. Step 6: Final answer
    x = 23,308.56

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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.