Home / 53,816.70-80,725.05-42,139.90

Finding the Fourth Proportional to 53,816.70, 80,725.05 and 42,139.90

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Solution

The fourth proportional to 53,816.70, 80,725.05 and 42,139.90 is: 63,209.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,816.70 : 80,725.05 = 42,139.90 : x
  2. Step 2: Convert to fraction form
    53,816.70/80,725.05 = 42,139.90/x
  3. Step 3: Cross multiply
    53,816.70x = 80,725.05 × 42,139.90
  4. Step 4: Simplify right side
    53,816.70x = 3,401,745,534.50
  5. Step 5: Solve for x
    x = 3,401,745,534.50/53,816.70
  6. Step 6: Final answer
    x = 63,209.85

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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.