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Finding the Fourth Proportional to 61,377.80, 84,749.02 and 47,925.72

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Solution

The fourth proportional to 61,377.80, 84,749.02 and 47,925.72 is: 66,174.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,377.80 : 84,749.02 = 47,925.72 : x
  2. Step 2: Convert to fraction form
    61,377.80/84,749.02 = 47,925.72/x
  3. Step 3: Cross multiply
    61,377.80x = 84,749.02 × 47,925.72
  4. Step 4: Simplify right side
    61,377.80x = 4,061,657,682.98
  5. Step 5: Solve for x
    x = 4,061,657,682.98/61,377.80
  6. Step 6: Final answer
    x = 66,174.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.