Home / 71,219.34-98,281.01-39,387.56

Finding the Fourth Proportional to 71,219.34, 98,281.01 and 39,387.56

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Solution

The fourth proportional to 71,219.34, 98,281.01 and 39,387.56 is: 54,353.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,219.34 : 98,281.01 = 39,387.56 : x
  2. Step 2: Convert to fraction form
    71,219.34/98,281.01 = 39,387.56/x
  3. Step 3: Cross multiply
    71,219.34x = 98,281.01 × 39,387.56
  4. Step 4: Simplify right side
    71,219.34x = 3,871,048,785.30
  5. Step 5: Solve for x
    x = 3,871,048,785.30/71,219.34
  6. Step 6: Final answer
    x = 54,353.90

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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.