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Finding the Fourth Proportional to 88,672, 122,349.43 and 56,419.42

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Solution

The fourth proportional to 88,672, 122,349.43 and 56,419.42 is: 77,847.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,672 : 122,349.43 = 56,419.42 : x
  2. Step 2: Convert to fraction form
    88,672/122,349.43 = 56,419.42/x
  3. Step 3: Cross multiply
    88,672x = 122,349.43 × 56,419.42
  4. Step 4: Simplify right side
    88,672x = 6,902,883,877.93
  5. Step 5: Solve for x
    x = 6,902,883,877.93/88,672
  6. Step 6: Final answer
    x = 77,847.39

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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.