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Finding the Fourth Proportional to 60,981.47, 91,472.19 and 40,200.11

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Solution

The fourth proportional to 60,981.47, 91,472.19 and 40,200.11 is: 60,300.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,981.47 : 91,472.19 = 40,200.11 : x
  2. Step 2: Convert to fraction form
    60,981.47/91,472.19 = 40,200.11/x
  3. Step 3: Cross multiply
    60,981.47x = 91,472.19 × 40,200.11
  4. Step 4: Simplify right side
    60,981.47x = 3,677,192,099.94
  5. Step 5: Solve for x
    x = 3,677,192,099.94/60,981.47
  6. Step 6: Final answer
    x = 60,300.16

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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.