Home / 85,742.40-118,288.18-53,899.68

Finding the Fourth Proportional to 85,742.40, 118,288.18 and 53,899.68

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Solution

The fourth proportional to 85,742.40, 118,288.18 and 53,899.68 is: 74,358.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,742.40 : 118,288.18 = 53,899.68 : x
  2. Step 2: Convert to fraction form
    85,742.40/118,288.18 = 53,899.68/x
  3. Step 3: Cross multiply
    85,742.40x = 118,288.18 × 53,899.68
  4. Step 4: Simplify right side
    85,742.40x = 6,375,695,049.78
  5. Step 5: Solve for x
    x = 6,375,695,049.78/85,742.40
  6. Step 6: Final answer
    x = 74,358.72

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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.