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Finding the Fourth Proportional to 85,612.16, 118,154.76 and 49,803.68

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Solution

The fourth proportional to 85,612.16, 118,154.76 and 49,803.68 is: 68,734.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,612.16 : 118,154.76 = 49,803.68 : x
  2. Step 2: Convert to fraction form
    85,612.16/118,154.76 = 49,803.68/x
  3. Step 3: Cross multiply
    85,612.16x = 118,154.76 × 49,803.68
  4. Step 4: Simplify right side
    85,612.16x = 5,884,541,857.52
  5. Step 5: Solve for x
    x = 5,884,541,857.52/85,612.16
  6. Step 6: Final answer
    x = 68,734.88

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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.