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Finding the Fourth Proportional to 61,401.72, 84,729.30 and 34,538.88

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Solution

The fourth proportional to 61,401.72, 84,729.30 and 34,538.88 is: 47,660.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,401.72 : 84,729.30 = 34,538.88 : x
  2. Step 2: Convert to fraction form
    61,401.72/84,729.30 = 34,538.88/x
  3. Step 3: Cross multiply
    61,401.72x = 84,729.30 × 34,538.88
  4. Step 4: Simplify right side
    61,401.72x = 2,926,455,125.18
  5. Step 5: Solve for x
    x = 2,926,455,125.18/61,401.72
  6. Step 6: Final answer
    x = 47,660.80

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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.