Home / 76,371.55-105,389.97-42,381.52

Finding the Fourth Proportional to 76,371.55, 105,389.97 and 42,381.52

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Solution

The fourth proportional to 76,371.55, 105,389.97 and 42,381.52 is: 58,484.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,371.55 : 105,389.97 = 42,381.52 : x
  2. Step 2: Convert to fraction form
    76,371.55/105,389.97 = 42,381.52/x
  3. Step 3: Cross multiply
    76,371.55x = 105,389.97 × 42,381.52
  4. Step 4: Simplify right side
    76,371.55x = 4,466,587,121.35
  5. Step 5: Solve for x
    x = 4,466,587,121.35/76,371.55
  6. Step 6: Final answer
    x = 58,484.96

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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.