Home / 65,666.48-98,485.30-18,909.20

Finding the Fourth Proportional to 65,666.48, 98,485.30 and 18,909.20

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Solution

The fourth proportional to 65,666.48, 98,485.30 and 18,909.20 is: 28,359.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,666.48 : 98,485.30 = 18,909.20 : x
  2. Step 2: Convert to fraction form
    65,666.48/98,485.30 = 18,909.20/x
  3. Step 3: Cross multiply
    65,666.48x = 98,485.30 × 18,909.20
  4. Step 4: Simplify right side
    65,666.48x = 1,862,278,234.76
  5. Step 5: Solve for x
    x = 1,862,278,234.76/65,666.48
  6. Step 6: Final answer
    x = 28,359.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.