Home / 79,153-109,231.14-45,621.16

Finding the Fourth Proportional to 79,153, 109,231.14 and 45,621.16

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Solution

The fourth proportional to 79,153, 109,231.14 and 45,621.16 is: 62,957.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,153 : 109,231.14 = 45,621.16 : x
  2. Step 2: Convert to fraction form
    79,153/109,231.14 = 45,621.16/x
  3. Step 3: Cross multiply
    79,153x = 109,231.14 × 45,621.16
  4. Step 4: Simplify right side
    79,153x = 4,983,251,314.92
  5. Step 5: Solve for x
    x = 4,983,251,314.92/79,153
  6. Step 6: Final answer
    x = 62,957.20

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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.