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Finding the Fourth Proportional to 78,625.80, 108,495.33 and 45,921.24

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Solution

The fourth proportional to 78,625.80, 108,495.33 and 45,921.24 is: 63,366.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,625.80 : 108,495.33 = 45,921.24 : x
  2. Step 2: Convert to fraction form
    78,625.80/108,495.33 = 45,921.24/x
  3. Step 3: Cross multiply
    78,625.80x = 108,495.33 × 45,921.24
  4. Step 4: Simplify right side
    78,625.80x = 4,982,240,087.81
  5. Step 5: Solve for x
    x = 4,982,240,087.81/78,625.80
  6. Step 6: Final answer
    x = 63,366.48

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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.