Home / 74,509.20-111,763.80-66,344.40

Finding the Fourth Proportional to 74,509.20, 111,763.80 and 66,344.40

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Solution

The fourth proportional to 74,509.20, 111,763.80 and 66,344.40 is: 99,516.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,509.20 : 111,763.80 = 66,344.40 : x
  2. Step 2: Convert to fraction form
    74,509.20/111,763.80 = 66,344.40/x
  3. Step 3: Cross multiply
    74,509.20x = 111,763.80 × 66,344.40
  4. Step 4: Simplify right side
    74,509.20x = 7,414,902,252.72
  5. Step 5: Solve for x
    x = 7,414,902,252.72/74,509.20
  6. Step 6: Final answer
    x = 99,516.60

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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.