Home / 76,729.46-105,889.53-42,275.61

Finding the Fourth Proportional to 76,729.46, 105,889.53 and 42,275.61

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Solution

The fourth proportional to 76,729.46, 105,889.53 and 42,275.61 is: 58,341.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,729.46 : 105,889.53 = 42,275.61 : x
  2. Step 2: Convert to fraction form
    76,729.46/105,889.53 = 42,275.61/x
  3. Step 3: Cross multiply
    76,729.46x = 105,889.53 × 42,275.61
  4. Step 4: Simplify right side
    76,729.46x = 4,476,544,473.36
  5. Step 5: Solve for x
    x = 4,476,544,473.36/76,729.46
  6. Step 6: Final answer
    x = 58,341.93

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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.