Home / 78,502.08-108,333.66-42,692.90

Finding the Fourth Proportional to 78,502.08, 108,333.66 and 42,692.90

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Solution

The fourth proportional to 78,502.08, 108,333.66 and 42,692.90 is: 58,916.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,502.08 : 108,333.66 = 42,692.90 : x
  2. Step 2: Convert to fraction form
    78,502.08/108,333.66 = 42,692.90/x
  3. Step 3: Cross multiply
    78,502.08x = 108,333.66 × 42,692.90
  4. Step 4: Simplify right side
    78,502.08x = 4,625,077,571.35
  5. Step 5: Solve for x
    x = 4,625,077,571.35/78,502.08
  6. Step 6: Final answer
    x = 58,916.62

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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.