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Finding the Fourth Proportional to 61,875, 85,377.60 and 35,008.92

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Solution

The fourth proportional to 61,875, 85,377.60 and 35,008.92 is: 48,306.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,875 : 85,377.60 = 35,008.92 : x
  2. Step 2: Convert to fraction form
    61,875/85,377.60 = 35,008.92/x
  3. Step 3: Cross multiply
    61,875x = 85,377.60 × 35,008.92
  4. Step 4: Simplify right side
    61,875x = 2,988,977,568.19
  5. Step 5: Solve for x
    x = 2,988,977,568.19/61,875
  6. Step 6: Final answer
    x = 48,306.71

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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.