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Finding the Fourth Proportional to 86,034.60, 118,770.90 and 53,787.12

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Solution

The fourth proportional to 86,034.60, 118,770.90 and 53,787.12 is: 74,253.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,034.60 : 118,770.90 = 53,787.12 : x
  2. Step 2: Convert to fraction form
    86,034.60/118,770.90 = 53,787.12/x
  3. Step 3: Cross multiply
    86,034.60x = 118,770.90 × 53,787.12
  4. Step 4: Simplify right side
    86,034.60x = 6,388,344,650.81
  5. Step 5: Solve for x
    x = 6,388,344,650.81/86,034.60
  6. Step 6: Final answer
    x = 74,253.20

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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.