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Finding the Fourth Proportional to 78,899.01, 108,881.03 and 43,089.01

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Solution

The fourth proportional to 78,899.01, 108,881.03 and 43,089.01 is: 59,463.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,899.01 : 108,881.03 = 43,089.01 : x
  2. Step 2: Convert to fraction form
    78,899.01/108,881.03 = 43,089.01/x
  3. Step 3: Cross multiply
    78,899.01x = 108,881.03 × 43,089.01
  4. Step 4: Simplify right side
    78,899.01x = 4,691,575,790.48
  5. Step 5: Solve for x
    x = 4,691,575,790.48/78,899.01
  6. Step 6: Final answer
    x = 59,463.05

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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.