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Finding the Fourth Proportional to 70,505.65, 105,757.03 and 28,953.01

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Solution

The fourth proportional to 70,505.65, 105,757.03 and 28,953.01 is: 43,428.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,505.65 : 105,757.03 = 28,953.01 : x
  2. Step 2: Convert to fraction form
    70,505.65/105,757.03 = 28,953.01/x
  3. Step 3: Cross multiply
    70,505.65x = 105,757.03 × 28,953.01
  4. Step 4: Simplify right side
    70,505.65x = 3,061,984,347.16
  5. Step 5: Solve for x
    x = 3,061,984,347.16/70,505.65
  6. Step 6: Final answer
    x = 43,428.92

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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.