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Finding the Fourth Proportional to 112,476, 155,220.27 and 61,487.58

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Solution

The fourth proportional to 112,476, 155,220.27 and 61,487.58 is: 84,854.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,476 : 155,220.27 = 61,487.58 : x
  2. Step 2: Convert to fraction form
    112,476/155,220.27 = 61,487.58/x
  3. Step 3: Cross multiply
    112,476x = 155,220.27 × 61,487.58
  4. Step 4: Simplify right side
    112,476x = 9,544,118,769.25
  5. Step 5: Solve for x
    x = 9,544,118,769.25/112,476
  6. Step 6: Final answer
    x = 84,854.71

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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.