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Finding the Fourth Proportional to 90,809.68, 125,246.34 and 58,988.82

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Solution

The fourth proportional to 90,809.68, 125,246.34 and 58,988.82 is: 81,358.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,809.68 : 125,246.34 = 58,988.82 : x
  2. Step 2: Convert to fraction form
    90,809.68/125,246.34 = 58,988.82/x
  3. Step 3: Cross multiply
    90,809.68x = 125,246.34 × 58,988.82
  4. Step 4: Simplify right side
    90,809.68x = 7,388,133,805.92
  5. Step 5: Solve for x
    x = 7,388,133,805.92/90,809.68
  6. Step 6: Final answer
    x = 81,358.44

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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.