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Finding the Fourth Proportional to 75,457.79, 113,099.19 and 71,083.79

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Solution

The fourth proportional to 75,457.79, 113,099.19 and 71,083.79 is: 106,543.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,457.79 : 113,099.19 = 71,083.79 : x
  2. Step 2: Convert to fraction form
    75,457.79/113,099.19 = 71,083.79/x
  3. Step 3: Cross multiply
    75,457.79x = 113,099.19 × 71,083.79
  4. Step 4: Simplify right side
    75,457.79x = 8,039,518,505.63
  5. Step 5: Solve for x
    x = 8,039,518,505.63/75,457.79
  6. Step 6: Final answer
    x = 106,543.26

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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.