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Finding the Fourth Proportional to 61,990.57, 92,950.84 and 56,700.76

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Solution

The fourth proportional to 61,990.57, 92,950.84 and 56,700.76 is: 85,019.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,990.57 : 92,950.84 = 56,700.76 : x
  2. Step 2: Convert to fraction form
    61,990.57/92,950.84 = 56,700.76/x
  3. Step 3: Cross multiply
    61,990.57x = 92,950.84 × 56,700.76
  4. Step 4: Simplify right side
    61,990.57x = 5,270,383,283.42
  5. Step 5: Solve for x
    x = 5,270,383,283.42/61,990.57
  6. Step 6: Final answer
    x = 85,019.12

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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.