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Finding the Fourth Proportional to 78,642.71, 108,530.00 and 44,654.36

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Solution

The fourth proportional to 78,642.71, 108,530.00 and 44,654.36 is: 61,624.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,642.71 : 108,530.00 = 44,654.36 : x
  2. Step 2: Convert to fraction form
    78,642.71/108,530.00 = 44,654.36/x
  3. Step 3: Cross multiply
    78,642.71x = 108,530.00 × 44,654.36
  4. Step 4: Simplify right side
    78,642.71x = 4,846,337,259.79
  5. Step 5: Solve for x
    x = 4,846,337,259.79/78,642.71
  6. Step 6: Final answer
    x = 61,624.75

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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.