Home / 76,371.77-105,392.82-42,385.38

Finding the Fourth Proportional to 76,371.77, 105,392.82 and 42,385.38

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Solution

The fourth proportional to 76,371.77, 105,392.82 and 42,385.38 is: 58,491.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,371.77 : 105,392.82 = 42,385.38 : x
  2. Step 2: Convert to fraction form
    76,371.77/105,392.82 = 42,385.38/x
  3. Step 3: Cross multiply
    76,371.77x = 105,392.82 × 42,385.38
  4. Step 4: Simplify right side
    76,371.77x = 4,467,114,724.97
  5. Step 5: Solve for x
    x = 4,467,114,724.97/76,371.77
  6. Step 6: Final answer
    x = 58,491.70

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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.