Home / 71,948.12-99,288.48-40,116.32

Finding the Fourth Proportional to 71,948.12, 99,288.48 and 40,116.32

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Solution

The fourth proportional to 71,948.12, 99,288.48 and 40,116.32 is: 55,360.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,948.12 : 99,288.48 = 40,116.32 : x
  2. Step 2: Convert to fraction form
    71,948.12/99,288.48 = 40,116.32/x
  3. Step 3: Cross multiply
    71,948.12x = 99,288.48 × 40,116.32
  4. Step 4: Simplify right side
    71,948.12x = 3,983,088,435.99
  5. Step 5: Solve for x
    x = 3,983,088,435.99/71,948.12
  6. Step 6: Final answer
    x = 55,360.56

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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.