Home / 76,145.64-105,079.46-42,154.13

Finding the Fourth Proportional to 76,145.64, 105,079.46 and 42,154.13

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Solution

The fourth proportional to 76,145.64, 105,079.46 and 42,154.13 is: 58,171.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,145.64 : 105,079.46 = 42,154.13 : x
  2. Step 2: Convert to fraction form
    76,145.64/105,079.46 = 42,154.13/x
  3. Step 3: Cross multiply
    76,145.64x = 105,079.46 × 42,154.13
  4. Step 4: Simplify right side
    76,145.64x = 4,429,532,481.00
  5. Step 5: Solve for x
    x = 4,429,532,481.00/76,145.64
  6. Step 6: Final answer
    x = 58,171.85

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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.