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Finding the Fourth Proportional to 72,066.95, 108,006.36 and 52,143.55

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Solution

The fourth proportional to 72,066.95, 108,006.36 and 52,143.55 is: 78,147.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,066.95 : 108,006.36 = 52,143.55 : x
  2. Step 2: Convert to fraction form
    72,066.95/108,006.36 = 52,143.55/x
  3. Step 3: Cross multiply
    72,066.95x = 108,006.36 × 52,143.55
  4. Step 4: Simplify right side
    72,066.95x = 5,631,834,860.73
  5. Step 5: Solve for x
    x = 5,631,834,860.73/72,066.95
  6. Step 6: Final answer
    x = 78,147.27

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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.