Home / 45,235.12-67,831.10-20,275.38

Finding the Fourth Proportional to 45,235.12, 67,831.10 and 20,275.38

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Solution

The fourth proportional to 45,235.12, 67,831.10 and 20,275.38 is: 30,403.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,235.12 : 67,831.10 = 20,275.38 : x
  2. Step 2: Convert to fraction form
    45,235.12/67,831.10 = 20,275.38/x
  3. Step 3: Cross multiply
    45,235.12x = 67,831.10 × 20,275.38
  4. Step 4: Simplify right side
    45,235.12x = 1,375,301,328.32
  5. Step 5: Solve for x
    x = 1,375,301,328.32/45,235.12
  6. Step 6: Final answer
    x = 30,403.40

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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.