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Finding the Fourth Proportional to 78,894.98, 108,877.70 and 43,087.12

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Solution

The fourth proportional to 78,894.98, 108,877.70 and 43,087.12 is: 59,461.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,894.98 : 108,877.70 = 43,087.12 : x
  2. Step 2: Convert to fraction form
    78,894.98/108,877.70 = 43,087.12/x
  3. Step 3: Cross multiply
    78,894.98x = 108,877.70 × 43,087.12
  4. Step 4: Simplify right side
    78,894.98x = 4,691,226,525.22
  5. Step 5: Solve for x
    x = 4,691,226,525.22/78,894.98
  6. Step 6: Final answer
    x = 59,461.66

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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.