Home / 105,479.28-145,555.24-57,733.52

Finding the Fourth Proportional to 105,479.28, 145,555.24 and 57,733.52

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Solution

The fourth proportional to 105,479.28, 145,555.24 and 57,733.52 is: 79,668.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,479.28 : 145,555.24 = 57,733.52 : x
  2. Step 2: Convert to fraction form
    105,479.28/145,555.24 = 57,733.52/x
  3. Step 3: Cross multiply
    105,479.28x = 145,555.24 × 57,733.52
  4. Step 4: Simplify right side
    105,479.28x = 8,403,416,359.64
  5. Step 5: Solve for x
    x = 8,403,416,359.64/105,479.28
  6. Step 6: Final answer
    x = 79,668.88

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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.