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Finding the Fourth Proportional to 90,628.68, 125,041.68 and 54,792.72

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Solution

The fourth proportional to 90,628.68, 125,041.68 and 54,792.72 is: 75,598.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,628.68 : 125,041.68 = 54,792.72 : x
  2. Step 2: Convert to fraction form
    90,628.68/125,041.68 = 54,792.72/x
  3. Step 3: Cross multiply
    90,628.68x = 125,041.68 × 54,792.72
  4. Step 4: Simplify right side
    90,628.68x = 6,851,373,760.57
  5. Step 5: Solve for x
    x = 6,851,373,760.57/90,628.68
  6. Step 6: Final answer
    x = 75,598.30

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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.