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Finding the Fourth Proportional to 78,602.98, 108,459.89 and 45,062.50

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Solution

The fourth proportional to 78,602.98, 108,459.89 and 45,062.50 is: 62,179.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,602.98 : 108,459.89 = 45,062.50 : x
  2. Step 2: Convert to fraction form
    78,602.98/108,459.89 = 45,062.50/x
  3. Step 3: Cross multiply
    78,602.98x = 108,459.89 × 45,062.50
  4. Step 4: Simplify right side
    78,602.98x = 4,887,473,793.13
  5. Step 5: Solve for x
    x = 4,887,473,793.13/78,602.98
  6. Step 6: Final answer
    x = 62,179.24

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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.