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Finding the Fourth Proportional to 78,877.01, 108,849.44 and 43,066.91

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Solution

The fourth proportional to 78,877.01, 108,849.44 and 43,066.91 is: 59,431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,877.01 : 108,849.44 = 43,066.91 : x
  2. Step 2: Convert to fraction form
    78,877.01/108,849.44 = 43,066.91/x
  3. Step 3: Cross multiply
    78,877.01x = 108,849.44 × 43,066.91
  4. Step 4: Simplify right side
    78,877.01x = 4,687,808,599.45
  5. Step 5: Solve for x
    x = 4,687,808,599.45/78,877.01
  6. Step 6: Final answer
    x = 59,431.88

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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.