Home / 77,023.20-115,304.40-72,466.40

Finding the Fourth Proportional to 77,023.20, 115,304.40 and 72,466.40

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Solution

The fourth proportional to 77,023.20, 115,304.40 and 72,466.40 is: 108,482.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,023.20 : 115,304.40 = 72,466.40 : x
  2. Step 2: Convert to fraction form
    77,023.20/115,304.40 = 72,466.40/x
  3. Step 3: Cross multiply
    77,023.20x = 115,304.40 × 72,466.40
  4. Step 4: Simplify right side
    77,023.20x = 8,355,694,772.16
  5. Step 5: Solve for x
    x = 8,355,694,772.16/77,023.20
  6. Step 6: Final answer
    x = 108,482.83

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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.