Home / 76,341.24-105,348.78-42,349.56

Finding the Fourth Proportional to 76,341.24, 105,348.78 and 42,349.56

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Solution

The fourth proportional to 76,341.24, 105,348.78 and 42,349.56 is: 58,441.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,341.24 : 105,348.78 = 42,349.56 : x
  2. Step 2: Convert to fraction form
    76,341.24/105,348.78 = 42,349.56/x
  3. Step 3: Cross multiply
    76,341.24x = 105,348.78 × 42,349.56
  4. Step 4: Simplify right side
    76,341.24x = 4,461,474,479.54
  5. Step 5: Solve for x
    x = 4,461,474,479.54/76,341.24
  6. Step 6: Final answer
    x = 58,441.21

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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.