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Finding the Fourth Proportional to 60,254.74, 90,423.84 and 20,812.18

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Solution

The fourth proportional to 60,254.74, 90,423.84 and 20,812.18 is: 31,232.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,254.74 : 90,423.84 = 20,812.18 : x
  2. Step 2: Convert to fraction form
    60,254.74/90,423.84 = 20,812.18/x
  3. Step 3: Cross multiply
    60,254.74x = 90,423.84 × 20,812.18
  4. Step 4: Simplify right side
    60,254.74x = 1,881,917,234.37
  5. Step 5: Solve for x
    x = 1,881,917,234.37/60,254.74
  6. Step 6: Final answer
    x = 31,232.68

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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.