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Finding the Fourth Proportional to 75,307.32, 103,916.39 and 45,091.89

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Solution

The fourth proportional to 75,307.32, 103,916.39 and 45,091.89 is: 62,222.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,307.32 : 103,916.39 = 45,091.89 : x
  2. Step 2: Convert to fraction form
    75,307.32/103,916.39 = 45,091.89/x
  3. Step 3: Cross multiply
    75,307.32x = 103,916.39 × 45,091.89
  4. Step 4: Simplify right side
    75,307.32x = 4,685,786,201.62
  5. Step 5: Solve for x
    x = 4,685,786,201.62/75,307.32
  6. Step 6: Final answer
    x = 62,222.19

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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.