Home / 65,430.18-98,082.90-21,025.78

Finding the Fourth Proportional to 65,430.18, 98,082.90 and 21,025.78

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Solution

The fourth proportional to 65,430.18, 98,082.90 and 21,025.78 is: 31,518.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,430.18 : 98,082.90 = 21,025.78 : x
  2. Step 2: Convert to fraction form
    65,430.18/98,082.90 = 21,025.78/x
  3. Step 3: Cross multiply
    65,430.18x = 98,082.90 × 21,025.78
  4. Step 4: Simplify right side
    65,430.18x = 2,062,269,231.95
  5. Step 5: Solve for x
    x = 2,062,269,231.95/65,430.18
  6. Step 6: Final answer
    x = 31,518.62

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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.