Home / 72,643.14-100,247.45-40,376.74

Finding the Fourth Proportional to 72,643.14, 100,247.45 and 40,376.74

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Solution

The fourth proportional to 72,643.14, 100,247.45 and 40,376.74 is: 55,719.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,643.14 : 100,247.45 = 40,376.74 : x
  2. Step 2: Convert to fraction form
    72,643.14/100,247.45 = 40,376.74/x
  3. Step 3: Cross multiply
    72,643.14x = 100,247.45 × 40,376.74
  4. Step 4: Simplify right side
    72,643.14x = 4,047,665,214.31
  5. Step 5: Solve for x
    x = 4,047,665,214.31/72,643.14
  6. Step 6: Final answer
    x = 55,719.85

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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.