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Finding the Fourth Proportional to 61,663.02, 85,006.02 and 40,405.38

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Solution

The fourth proportional to 61,663.02, 85,006.02 and 40,405.38 is: 55,701.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,663.02 : 85,006.02 = 40,405.38 : x
  2. Step 2: Convert to fraction form
    61,663.02/85,006.02 = 40,405.38/x
  3. Step 3: Cross multiply
    61,663.02x = 85,006.02 × 40,405.38
  4. Step 4: Simplify right side
    61,663.02x = 3,434,700,540.39
  5. Step 5: Solve for x
    x = 3,434,700,540.39/61,663.02
  6. Step 6: Final answer
    x = 55,701.14

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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.