Home / 78,474.20-117,725.40-28,624.23

Finding the Fourth Proportional to 78,474.20, 117,725.40 and 28,624.23

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Solution

The fourth proportional to 78,474.20, 117,725.40 and 28,624.23 is: 42,941.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,474.20 : 117,725.40 = 28,624.23 : x
  2. Step 2: Convert to fraction form
    78,474.20/117,725.40 = 28,624.23/x
  3. Step 3: Cross multiply
    78,474.20x = 117,725.40 × 28,624.23
  4. Step 4: Simplify right side
    78,474.20x = 3,369,798,926.44
  5. Step 5: Solve for x
    x = 3,369,798,926.44/78,474.20
  6. Step 6: Final answer
    x = 42,941.49

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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.