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Finding the Fourth Proportional to 74,981.40, 112,472.10 and 30,593.40

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Solution

The fourth proportional to 74,981.40, 112,472.10 and 30,593.40 is: 45,890.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,981.40 : 112,472.10 = 30,593.40 : x
  2. Step 2: Convert to fraction form
    74,981.40/112,472.10 = 30,593.40/x
  3. Step 3: Cross multiply
    74,981.40x = 112,472.10 × 30,593.40
  4. Step 4: Simplify right side
    74,981.40x = 3,440,903,944.14
  5. Step 5: Solve for x
    x = 3,440,903,944.14/74,981.40
  6. Step 6: Final answer
    x = 45,890.10

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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.