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Finding the Fourth Proportional to 61,935.40, 92,916.06 and 20,377

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Solution

The fourth proportional to 61,935.40, 92,916.06 and 20,377 is: 30,569.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,935.40 : 92,916.06 = 20,377 : x
  2. Step 2: Convert to fraction form
    61,935.40/92,916.06 = 20,377/x
  3. Step 3: Cross multiply
    61,935.40x = 92,916.06 × 20,377
  4. Step 4: Simplify right side
    61,935.40x = 1,893,350,554.62
  5. Step 5: Solve for x
    x = 1,893,350,554.62/61,935.40
  6. Step 6: Final answer
    x = 30,569.76

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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.