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Finding the Fourth Proportional to 49,901.75, 74,830.75 and 18,715.13

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Solution

The fourth proportional to 49,901.75, 74,830.75 and 18,715.13 is: 28,064.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,901.75 : 74,830.75 = 18,715.13 : x
  2. Step 2: Convert to fraction form
    49,901.75/74,830.75 = 18,715.13/x
  3. Step 3: Cross multiply
    49,901.75x = 74,830.75 × 18,715.13
  4. Step 4: Simplify right side
    49,901.75x = 1,400,466,793.31
  5. Step 5: Solve for x
    x = 1,400,466,793.31/49,901.75
  6. Step 6: Final answer
    x = 28,064.49

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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.