Home / 76,370.77-105,391.44-42,384.38

Finding the Fourth Proportional to 76,370.77, 105,391.44 and 42,384.38

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Solution

The fourth proportional to 76,370.77, 105,391.44 and 42,384.38 is: 58,490.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,370.77 : 105,391.44 = 42,384.38 : x
  2. Step 2: Convert to fraction form
    76,370.77/105,391.44 = 42,384.38/x
  3. Step 3: Cross multiply
    76,370.77x = 105,391.44 × 42,384.38
  4. Step 4: Simplify right side
    76,370.77x = 4,466,951,105.19
  5. Step 5: Solve for x
    x = 4,466,951,105.19/76,370.77
  6. Step 6: Final answer
    x = 58,490.33

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Half scale
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Double scale
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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.