Home / 72,515.34-100,069.61-40,248.05

Finding the Fourth Proportional to 72,515.34, 100,069.61 and 40,248.05

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Solution

The fourth proportional to 72,515.34, 100,069.61 and 40,248.05 is: 55,541.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,515.34 : 100,069.61 = 40,248.05 : x
  2. Step 2: Convert to fraction form
    72,515.34/100,069.61 = 40,248.05/x
  3. Step 3: Cross multiply
    72,515.34x = 100,069.61 × 40,248.05
  4. Step 4: Simplify right side
    72,515.34x = 4,027,605,965.17
  5. Step 5: Solve for x
    x = 4,027,605,965.17/72,515.34
  6. Step 6: Final answer
    x = 55,541.43

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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.