Home / 78,890.40-108,869.36-44,901.50

Finding the Fourth Proportional to 78,890.40, 108,869.36 and 44,901.50

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Solution

The fourth proportional to 78,890.40, 108,869.36 and 44,901.50 is: 61,964.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,890.40 : 108,869.36 = 44,901.50 : x
  2. Step 2: Convert to fraction form
    78,890.40/108,869.36 = 44,901.50/x
  3. Step 3: Cross multiply
    78,890.40x = 108,869.36 × 44,901.50
  4. Step 4: Simplify right side
    78,890.40x = 4,888,396,799.19
  5. Step 5: Solve for x
    x = 4,888,396,799.19/78,890.40
  6. Step 6: Final answer
    x = 61,964.41

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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.