Home / 90,709.78-125,204.13-58,876.74

Finding the Fourth Proportional to 90,709.78, 125,204.13 and 58,876.74

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Solution

The fourth proportional to 90,709.78, 125,204.13 and 58,876.74 is: 81,265.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,709.78 : 125,204.13 = 58,876.74 : x
  2. Step 2: Convert to fraction form
    90,709.78/125,204.13 = 58,876.74/x
  3. Step 3: Cross multiply
    90,709.78x = 125,204.13 × 58,876.74
  4. Step 4: Simplify right side
    90,709.78x = 7,371,611,008.94
  5. Step 5: Solve for x
    x = 7,371,611,008.94/90,709.78
  6. Step 6: Final answer
    x = 81,265.89

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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.