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Finding the Fourth Proportional to 40,800.78, 60,862.10 and 40,124.12

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Solution

The fourth proportional to 40,800.78, 60,862.10 and 40,124.12 is: 59,852.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,800.78 : 60,862.10 = 40,124.12 : x
  2. Step 2: Convert to fraction form
    40,800.78/60,862.10 = 40,124.12/x
  3. Step 3: Cross multiply
    40,800.78x = 60,862.10 × 40,124.12
  4. Step 4: Simplify right side
    40,800.78x = 2,442,038,203.85
  5. Step 5: Solve for x
    x = 2,442,038,203.85/40,800.78
  6. Step 6: Final answer
    x = 59,852.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.