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Finding the Fourth Proportional to 90,810.92, 125,248.06 and 58,990.07

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Solution

The fourth proportional to 90,810.92, 125,248.06 and 58,990.07 is: 81,360.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,810.92 : 125,248.06 = 58,990.07 : x
  2. Step 2: Convert to fraction form
    90,810.92/125,248.06 = 58,990.07/x
  3. Step 3: Cross multiply
    90,810.92x = 125,248.06 × 58,990.07
  4. Step 4: Simplify right side
    90,810.92x = 7,388,391,826.76
  5. Step 5: Solve for x
    x = 7,388,391,826.76/90,810.92
  6. Step 6: Final answer
    x = 81,360.17

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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.