Home / 57,009.30-85,368.15-42,137.70

Finding the Fourth Proportional to 57,009.30, 85,368.15 and 42,137.70

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Solution

The fourth proportional to 57,009.30, 85,368.15 and 42,137.70 is: 63,098.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,009.30 : 85,368.15 = 42,137.70 : x
  2. Step 2: Convert to fraction form
    57,009.30/85,368.15 = 42,137.70/x
  3. Step 3: Cross multiply
    57,009.30x = 85,368.15 × 42,137.70
  4. Step 4: Simplify right side
    57,009.30x = 3,597,217,494.26
  5. Step 5: Solve for x
    x = 3,597,217,494.26/57,009.30
  6. Step 6: Final answer
    x = 63,098.78

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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.