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Finding the Fourth Proportional to 78,689.88, 108,588.62 and 44,698.26

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Solution

The fourth proportional to 78,689.88, 108,588.62 and 44,698.26 is: 61,681.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,689.88 : 108,588.62 = 44,698.26 : x
  2. Step 2: Convert to fraction form
    78,689.88/108,588.62 = 44,698.26/x
  3. Step 3: Cross multiply
    78,689.88x = 108,588.62 × 44,698.26
  4. Step 4: Simplify right side
    78,689.88x = 4,853,722,369.80
  5. Step 5: Solve for x
    x = 4,853,722,369.80/78,689.88
  6. Step 6: Final answer
    x = 61,681.66

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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.