Home / 76,279.63-105,256.14-42,287.80

Finding the Fourth Proportional to 76,279.63, 105,256.14 and 42,287.80

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Solution

The fourth proportional to 76,279.63, 105,256.14 and 42,287.80 is: 58,351.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,279.63 : 105,256.14 = 42,287.80 : x
  2. Step 2: Convert to fraction form
    76,279.63/105,256.14 = 42,287.80/x
  3. Step 3: Cross multiply
    76,279.63x = 105,256.14 × 42,287.80
  4. Step 4: Simplify right side
    76,279.63x = 4,451,050,597.09
  5. Step 5: Solve for x
    x = 4,451,050,597.09/76,279.63
  6. Step 6: Final answer
    x = 58,351.76

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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.