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Finding the Fourth Proportional to 61,785.54, 92,705.94 and 28,487.75

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Solution

The fourth proportional to 61,785.54, 92,705.94 and 28,487.75 is: 42,744.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,785.54 : 92,705.94 = 28,487.75 : x
  2. Step 2: Convert to fraction form
    61,785.54/92,705.94 = 28,487.75/x
  3. Step 3: Cross multiply
    61,785.54x = 92,705.94 × 28,487.75
  4. Step 4: Simplify right side
    61,785.54x = 2,640,983,178.71
  5. Step 5: Solve for x
    x = 2,640,983,178.71/61,785.54
  6. Step 6: Final answer
    x = 42,744.36

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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.