Home / 78,933.20-118,394.40-25,624.40

Finding the Fourth Proportional to 78,933.20, 118,394.40 and 25,624.40

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Solution

The fourth proportional to 78,933.20, 118,394.40 and 25,624.40 is: 38,434.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,933.20 : 118,394.40 = 25,624.40 : x
  2. Step 2: Convert to fraction form
    78,933.20/118,394.40 = 25,624.40/x
  3. Step 3: Cross multiply
    78,933.20x = 118,394.40 × 25,624.40
  4. Step 4: Simplify right side
    78,933.20x = 3,033,785,463.36
  5. Step 5: Solve for x
    x = 3,033,785,463.36/78,933.20
  6. Step 6: Final answer
    x = 38,434.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.