Home / 85,436.38-117,899.40-47,193.76

Finding the Fourth Proportional to 85,436.38, 117,899.40 and 47,193.76

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Solution

The fourth proportional to 85,436.38, 117,899.40 and 47,193.76 is: 65,125.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,436.38 : 117,899.40 = 47,193.76 : x
  2. Step 2: Convert to fraction form
    85,436.38/117,899.40 = 47,193.76/x
  3. Step 3: Cross multiply
    85,436.38x = 117,899.40 × 47,193.76
  4. Step 4: Simplify right side
    85,436.38x = 5,564,115,987.74
  5. Step 5: Solve for x
    x = 5,564,115,987.74/85,436.38
  6. Step 6: Final answer
    x = 65,125.84

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1.5x scale

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.