Home / 78,780.08-118,114.76-28,853.69

Finding the Fourth Proportional to 78,780.08, 118,114.76 and 28,853.69

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Solution

The fourth proportional to 78,780.08, 118,114.76 and 28,853.69 is: 43,260.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,780.08 : 118,114.76 = 28,853.69 : x
  2. Step 2: Convert to fraction form
    78,780.08/118,114.76 = 28,853.69/x
  3. Step 3: Cross multiply
    78,780.08x = 118,114.76 × 28,853.69
  4. Step 4: Simplify right side
    78,780.08x = 3,408,045,934.62
  5. Step 5: Solve for x
    x = 3,408,045,934.62/78,780.08
  6. Step 6: Final answer
    x = 43,260.25

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1.5x scale

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.