Home / 78,677.21-108,575.79-42,867.22

Finding the Fourth Proportional to 78,677.21, 108,575.79 and 42,867.22

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Solution

The fourth proportional to 78,677.21, 108,575.79 and 42,867.22 is: 59,157.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,677.21 : 108,575.79 = 42,867.22 : x
  2. Step 2: Convert to fraction form
    78,677.21/108,575.79 = 42,867.22/x
  3. Step 3: Cross multiply
    78,677.21x = 108,575.79 × 42,867.22
  4. Step 4: Simplify right side
    78,677.21x = 4,654,341,733.72
  5. Step 5: Solve for x
    x = 4,654,341,733.72/78,677.21
  6. Step 6: Final answer
    x = 59,157.43

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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.