Home / 45,363.02-68,021.10-20,381.72

Finding the Fourth Proportional to 45,363.02, 68,021.10 and 20,381.72

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Solution

The fourth proportional to 45,363.02, 68,021.10 and 20,381.72 is: 30,562.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,363.02 : 68,021.10 = 20,381.72 : x
  2. Step 2: Convert to fraction form
    45,363.02/68,021.10 = 20,381.72/x
  3. Step 3: Cross multiply
    45,363.02x = 68,021.10 × 20,381.72
  4. Step 4: Simplify right side
    45,363.02x = 1,386,387,014.29
  5. Step 5: Solve for x
    x = 1,386,387,014.29/45,363.02
  6. Step 6: Final answer
    x = 30,562.05

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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.