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Finding the Fourth Proportional to 78,217.47, 107,939.46 and 44,232.63

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Solution

The fourth proportional to 78,217.47, 107,939.46 and 44,232.63 is: 61,040.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,217.47 : 107,939.46 = 44,232.63 : x
  2. Step 2: Convert to fraction form
    78,217.47/107,939.46 = 44,232.63/x
  3. Step 3: Cross multiply
    78,217.47x = 107,939.46 × 44,232.63
  4. Step 4: Simplify right side
    78,217.47x = 4,774,446,196.58
  5. Step 5: Solve for x
    x = 4,774,446,196.58/78,217.47
  6. Step 6: Final answer
    x = 61,040.66

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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.