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Finding the Fourth Proportional to 112,878, 155,772.72 and 62,578.08

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Solution

The fourth proportional to 112,878, 155,772.72 and 62,578.08 is: 86,358.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,878 : 155,772.72 = 62,578.08 : x
  2. Step 2: Convert to fraction form
    112,878/155,772.72 = 62,578.08/x
  3. Step 3: Cross multiply
    112,878x = 155,772.72 × 62,578.08
  4. Step 4: Simplify right side
    112,878x = 9,747,957,733.98
  5. Step 5: Solve for x
    x = 9,747,957,733.98/112,878
  6. Step 6: Final answer
    x = 86,358.35

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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.