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Finding the Fourth Proportional to 61,123.47, 84,378.00 and 38,495.71

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Solution

The fourth proportional to 61,123.47, 84,378.00 and 38,495.71 is: 53,141.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,123.47 : 84,378.00 = 38,495.71 : x
  2. Step 2: Convert to fraction form
    61,123.47/84,378.00 = 38,495.71/x
  3. Step 3: Cross multiply
    61,123.47x = 84,378.00 × 38,495.71
  4. Step 4: Simplify right side
    61,123.47x = 3,248,190,793.59
  5. Step 5: Solve for x
    x = 3,248,190,793.59/61,123.47
  6. Step 6: Final answer
    x = 53,141.47

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1.5x scale

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.