Home / 74,359.60-111,215.40-66,518.80

Finding the Fourth Proportional to 74,359.60, 111,215.40 and 66,518.80

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Solution

The fourth proportional to 74,359.60, 111,215.40 and 66,518.80 is: 99,488.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,359.60 : 111,215.40 = 66,518.80 : x
  2. Step 2: Convert to fraction form
    74,359.60/111,215.40 = 66,518.80/x
  3. Step 3: Cross multiply
    74,359.60x = 111,215.40 × 66,518.80
  4. Step 4: Simplify right side
    74,359.60x = 7,397,914,949.52
  5. Step 5: Solve for x
    x = 7,397,914,949.52/74,359.60
  6. Step 6: Final answer
    x = 99,488.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.