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Finding the Fourth Proportional to 90,553.76, 124,968.72 and 50,271.20

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Solution

The fourth proportional to 90,553.76, 124,968.72 and 50,271.20 is: 69,376.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,553.76 : 124,968.72 = 50,271.20 : x
  2. Step 2: Convert to fraction form
    90,553.76/124,968.72 = 50,271.20/x
  3. Step 3: Cross multiply
    90,553.76x = 124,968.72 × 50,271.20
  4. Step 4: Simplify right side
    90,553.76x = 6,282,327,516.86
  5. Step 5: Solve for x
    x = 6,282,327,516.86/90,553.76
  6. Step 6: Final answer
    x = 69,376.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.