Home / 52,123.20-78,184.06-12,680.40

Finding the Fourth Proportional to 52,123.20, 78,184.06 and 12,680.40

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Solution

The fourth proportional to 52,123.20, 78,184.06 and 12,680.40 is: 19,020.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,123.20 : 78,184.06 = 12,680.40 : x
  2. Step 2: Convert to fraction form
    52,123.20/78,184.06 = 12,680.40/x
  3. Step 3: Cross multiply
    52,123.20x = 78,184.06 × 12,680.40
  4. Step 4: Simplify right side
    52,123.20x = 991,405,154.42
  5. Step 5: Solve for x
    x = 991,405,154.42/52,123.20
  6. Step 6: Final answer
    x = 19,020.42

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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.