Home / 71,499.12-98,670.60-39,235.20

Finding the Fourth Proportional to 71,499.12, 98,670.60 and 39,235.20

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Solution

The fourth proportional to 71,499.12, 98,670.60 and 39,235.20 is: 54,145.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,499.12 : 98,670.60 = 39,235.20 : x
  2. Step 2: Convert to fraction form
    71,499.12/98,670.60 = 39,235.20/x
  3. Step 3: Cross multiply
    71,499.12x = 98,670.60 × 39,235.20
  4. Step 4: Simplify right side
    71,499.12x = 3,871,360,725.12
  5. Step 5: Solve for x
    x = 3,871,360,725.12/71,499.12
  6. Step 6: Final answer
    x = 54,145.57

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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.