Home / 45,612.86-68,417.78-20,652.90

Finding the Fourth Proportional to 45,612.86, 68,417.78 and 20,652.90

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Solution

The fourth proportional to 45,612.86, 68,417.78 and 20,652.90 is: 30,978.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,612.86 : 68,417.78 = 20,652.90 : x
  2. Step 2: Convert to fraction form
    45,612.86/68,417.78 = 20,652.90/x
  3. Step 3: Cross multiply
    45,612.86x = 68,417.78 × 20,652.90
  4. Step 4: Simplify right side
    45,612.86x = 1,413,025,465.30
  5. Step 5: Solve for x
    x = 1,413,025,465.30/45,612.86
  6. Step 6: Final answer
    x = 30,978.67

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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.