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Finding the Fourth Proportional to 55,510.48, 83,188.76 and 30,520.40

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Solution

The fourth proportional to 55,510.48, 83,188.76 and 30,520.40 is: 45,738.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,510.48 : 83,188.76 = 30,520.40 : x
  2. Step 2: Convert to fraction form
    55,510.48/83,188.76 = 30,520.40/x
  3. Step 3: Cross multiply
    55,510.48x = 83,188.76 × 30,520.40
  4. Step 4: Simplify right side
    55,510.48x = 2,538,954,230.70
  5. Step 5: Solve for x
    x = 2,538,954,230.70/55,510.48
  6. Step 6: Final answer
    x = 45,738.29

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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.