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Finding the Fourth Proportional to 71,605.26, 98,605.26 and 65,617.74

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Solution

The fourth proportional to 71,605.26, 98,605.26 and 65,617.74 is: 90,360.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,605.26 : 98,605.26 = 65,617.74 : x
  2. Step 2: Convert to fraction form
    71,605.26/98,605.26 = 65,617.74/x
  3. Step 3: Cross multiply
    71,605.26x = 98,605.26 × 65,617.74
  4. Step 4: Simplify right side
    71,605.26x = 6,470,254,313.31
  5. Step 5: Solve for x
    x = 6,470,254,313.31/71,605.26
  6. Step 6: Final answer
    x = 90,360.04

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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.