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Finding the Fourth Proportional to 61,151.76, 84,353.64 and 38,454.84

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Solution

The fourth proportional to 61,151.76, 84,353.64 and 38,454.84 is: 53,045.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,151.76 : 84,353.64 = 38,454.84 : x
  2. Step 2: Convert to fraction form
    61,151.76/84,353.64 = 38,454.84/x
  3. Step 3: Cross multiply
    61,151.76x = 84,353.64 × 38,454.84
  4. Step 4: Simplify right side
    61,151.76x = 3,243,805,729.62
  5. Step 5: Solve for x
    x = 3,243,805,729.62/61,151.76
  6. Step 6: Final answer
    x = 53,045.17

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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.