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Finding the Fourth Proportional to 112,878, 155,771.64 and 62,577

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Solution

The fourth proportional to 112,878, 155,771.64 and 62,577 is: 86,356.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,878 : 155,771.64 = 62,577 : x
  2. Step 2: Convert to fraction form
    112,878/155,771.64 = 62,577/x
  3. Step 3: Cross multiply
    112,878x = 155,771.64 × 62,577
  4. Step 4: Simplify right side
    112,878x = 9,747,721,916.28
  5. Step 5: Solve for x
    x = 9,747,721,916.28/112,878
  6. Step 6: Final answer
    x = 86,356.26

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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.