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Finding the Fourth Proportional to 57,298.61, 85,947.90 and 17,858.90

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Solution

The fourth proportional to 57,298.61, 85,947.90 and 17,858.90 is: 26,788.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,298.61 : 85,947.90 = 17,858.90 : x
  2. Step 2: Convert to fraction form
    57,298.61/85,947.90 = 17,858.90/x
  3. Step 3: Cross multiply
    57,298.61x = 85,947.90 × 17,858.90
  4. Step 4: Simplify right side
    57,298.61x = 1,534,934,951.31
  5. Step 5: Solve for x
    x = 1,534,934,951.31/57,298.61
  6. Step 6: Final answer
    x = 26,788.35

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Similar ratio
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1.5x scale

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.