Home / 45,501.20-68,251.80-42,909.20

Finding the Fourth Proportional to 45,501.20, 68,251.80 and 42,909.20

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Solution

The fourth proportional to 45,501.20, 68,251.80 and 42,909.20 is: 64,363.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,501.20 : 68,251.80 = 42,909.20 : x
  2. Step 2: Convert to fraction form
    45,501.20/68,251.80 = 42,909.20/x
  3. Step 3: Cross multiply
    45,501.20x = 68,251.80 × 42,909.20
  4. Step 4: Simplify right side
    45,501.20x = 2,928,630,136.56
  5. Step 5: Solve for x
    x = 2,928,630,136.56/45,501.20
  6. Step 6: Final answer
    x = 64,363.80

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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.