Home / 81,230.60-112,097.46-45,420.20

Finding the Fourth Proportional to 81,230.60, 112,097.46 and 45,420.20

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Solution

The fourth proportional to 81,230.60, 112,097.46 and 45,420.20 is: 62,679.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,230.60 : 112,097.46 = 45,420.20 : x
  2. Step 2: Convert to fraction form
    81,230.60/112,097.46 = 45,420.20/x
  3. Step 3: Cross multiply
    81,230.60x = 112,097.46 × 45,420.20
  4. Step 4: Simplify right side
    81,230.60x = 5,091,489,052.69
  5. Step 5: Solve for x
    x = 5,091,489,052.69/81,230.60
  6. Step 6: Final answer
    x = 62,679.45

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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.