Home / 86,123.12-118,855.80-48,397.28

Finding the Fourth Proportional to 86,123.12, 118,855.80 and 48,397.28

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Solution

The fourth proportional to 86,123.12, 118,855.80 and 48,397.28 is: 66,791.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,123.12 : 118,855.80 = 48,397.28 : x
  2. Step 2: Convert to fraction form
    86,123.12/118,855.80 = 48,397.28/x
  3. Step 3: Cross multiply
    86,123.12x = 118,855.80 × 48,397.28
  4. Step 4: Simplify right side
    86,123.12x = 5,752,297,432.22
  5. Step 5: Solve for x
    x = 5,752,297,432.22/86,123.12
  6. Step 6: Final answer
    x = 66,791.56

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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.