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Finding the Fourth Proportional to 90,624.68, 125,061.36 and 49,789.36

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Solution

The fourth proportional to 90,624.68, 125,061.36 and 49,789.36 is: 68,708.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,624.68 : 125,061.36 = 49,789.36 : x
  2. Step 2: Convert to fraction form
    90,624.68/125,061.36 = 49,789.36/x
  3. Step 3: Cross multiply
    90,624.68x = 125,061.36 × 49,789.36
  4. Step 4: Simplify right side
    90,624.68x = 6,226,725,075.13
  5. Step 5: Solve for x
    x = 6,226,725,075.13/90,624.68
  6. Step 6: Final answer
    x = 68,708.93

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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.