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Finding the Fourth Proportional to 49,385.76, 74,070 and 14,330.40

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Solution

The fourth proportional to 49,385.76, 74,070 and 14,330.40 is: 21,493.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,385.76 : 74,070 = 14,330.40 : x
  2. Step 2: Convert to fraction form
    49,385.76/74,070 = 14,330.40/x
  3. Step 3: Cross multiply
    49,385.76x = 74,070 × 14,330.40
  4. Step 4: Simplify right side
    49,385.76x = 1,061,452,728
  5. Step 5: Solve for x
    x = 1,061,452,728/49,385.76
  6. Step 6: Final answer
    x = 21,493.09

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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.