Home / 66,550.13-91,718.89-55,159.64

Finding the Fourth Proportional to 66,550.13, 91,718.89 and 55,159.64

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Solution

The fourth proportional to 66,550.13, 91,718.89 and 55,159.64 is: 76,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,550.13 : 91,718.89 = 55,159.64 : x
  2. Step 2: Convert to fraction form
    66,550.13/91,718.89 = 55,159.64/x
  3. Step 3: Cross multiply
    66,550.13x = 91,718.89 × 55,159.64
  4. Step 4: Simplify right side
    66,550.13x = 5,059,180,357.11
  5. Step 5: Solve for x
    x = 5,059,180,357.11/66,550.13
  6. Step 6: Final answer
    x = 76,020.60

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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.