Home / 71,830.32-99,127.44-40,002.18

Finding the Fourth Proportional to 71,830.32, 99,127.44 and 40,002.18

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Solution

The fourth proportional to 71,830.32, 99,127.44 and 40,002.18 is: 55,203.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,830.32 : 99,127.44 = 40,002.18 : x
  2. Step 2: Convert to fraction form
    71,830.32/99,127.44 = 40,002.18/x
  3. Step 3: Cross multiply
    71,830.32x = 99,127.44 × 40,002.18
  4. Step 4: Simplify right side
    71,830.32x = 3,965,313,697.82
  5. Step 5: Solve for x
    x = 3,965,313,697.82/71,830.32
  6. Step 6: Final answer
    x = 55,203.90

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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.