Home / 85,209.52-117,512.40-53,381.20

Finding the Fourth Proportional to 85,209.52, 117,512.40 and 53,381.20

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Solution

The fourth proportional to 85,209.52, 117,512.40 and 53,381.20 is: 73,617.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,209.52 : 117,512.40 = 53,381.20 : x
  2. Step 2: Convert to fraction form
    85,209.52/117,512.40 = 53,381.20/x
  3. Step 3: Cross multiply
    85,209.52x = 117,512.40 × 53,381.20
  4. Step 4: Simplify right side
    85,209.52x = 6,272,952,926.88
  5. Step 5: Solve for x
    x = 6,272,952,926.88/85,209.52
  6. Step 6: Final answer
    x = 73,617.98

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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.