Home / 76,392.11-105,422.24-42,402.79

Finding the Fourth Proportional to 76,392.11, 105,422.24 and 42,402.79

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Solution

The fourth proportional to 76,392.11, 105,422.24 and 42,402.79 is: 58,516.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,392.11 : 105,422.24 = 42,402.79 : x
  2. Step 2: Convert to fraction form
    76,392.11/105,422.24 = 42,402.79/x
  3. Step 3: Cross multiply
    76,392.11x = 105,422.24 × 42,402.79
  4. Step 4: Simplify right side
    76,392.11x = 4,470,196,364.92
  5. Step 5: Solve for x
    x = 4,470,196,364.92/76,392.11
  6. Step 6: Final answer
    x = 58,516.47

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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.