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Finding the Fourth Proportional to 55,407.56, 83,062.04 and 20,339

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Solution

The fourth proportional to 55,407.56, 83,062.04 and 20,339 is: 30,490.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,407.56 : 83,062.04 = 20,339 : x
  2. Step 2: Convert to fraction form
    55,407.56/83,062.04 = 20,339/x
  3. Step 3: Cross multiply
    55,407.56x = 83,062.04 × 20,339
  4. Step 4: Simplify right side
    55,407.56x = 1,689,398,831.56
  5. Step 5: Solve for x
    x = 1,689,398,831.56/55,407.56
  6. Step 6: Final answer
    x = 30,490.40

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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.