Home / 65,586.86-98,385.70-21,220.74

Finding the Fourth Proportional to 65,586.86, 98,385.70 and 21,220.74

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Solution

The fourth proportional to 65,586.86, 98,385.70 and 21,220.74 is: 31,832.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,586.86 : 98,385.70 = 21,220.74 : x
  2. Step 2: Convert to fraction form
    65,586.86/98,385.70 = 21,220.74/x
  3. Step 3: Cross multiply
    65,586.86x = 98,385.70 × 21,220.74
  4. Step 4: Simplify right side
    65,586.86x = 2,087,817,359.42
  5. Step 5: Solve for x
    x = 2,087,817,359.42/65,586.86
  6. Step 6: Final answer
    x = 31,832.86

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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.