Home / 75,209.20-112,784.63-40,129.72

Finding the Fourth Proportional to 75,209.20, 112,784.63 and 40,129.72

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Solution

The fourth proportional to 75,209.20, 112,784.63 and 40,129.72 is: 60,179.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,209.20 : 112,784.63 = 40,129.72 : x
  2. Step 2: Convert to fraction form
    75,209.20/112,784.63 = 40,129.72/x
  3. Step 3: Cross multiply
    75,209.20x = 112,784.63 × 40,129.72
  4. Step 4: Simplify right side
    75,209.20x = 4,526,015,058.28
  5. Step 5: Solve for x
    x = 4,526,015,058.28/75,209.20
  6. Step 6: Final answer
    x = 60,179.01

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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.