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Finding the Fourth Proportional to 66,867.26, 99,703.07 and 65,030.18

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Solution

The fourth proportional to 66,867.26, 99,703.07 and 65,030.18 is: 96,963.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,867.26 : 99,703.07 = 65,030.18 : x
  2. Step 2: Convert to fraction form
    66,867.26/99,703.07 = 65,030.18/x
  3. Step 3: Cross multiply
    66,867.26x = 99,703.07 × 65,030.18
  4. Step 4: Simplify right side
    66,867.26x = 6,483,708,008.85
  5. Step 5: Solve for x
    x = 6,483,708,008.85/66,867.26
  6. Step 6: Final answer
    x = 96,963.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.