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Finding the Fourth Proportional to 90,282.65, 135,475.84 and 70,505.69

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Solution

The fourth proportional to 90,282.65, 135,475.84 and 70,505.69 is: 105,799.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,282.65 : 135,475.84 = 70,505.69 : x
  2. Step 2: Convert to fraction form
    90,282.65/135,475.84 = 70,505.69/x
  3. Step 3: Cross multiply
    90,282.65x = 135,475.84 × 70,505.69
  4. Step 4: Simplify right side
    90,282.65x = 9,551,817,225.00
  5. Step 5: Solve for x
    x = 9,551,817,225.00/90,282.65
  6. Step 6: Final answer
    x = 105,799.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.