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Finding the Fourth Proportional to 112,937.80, 155,851.86 and 62,636.80

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Solution

The fourth proportional to 112,937.80, 155,851.86 and 62,636.80 is: 86,437.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,937.80 : 155,851.86 = 62,636.80 : x
  2. Step 2: Convert to fraction form
    112,937.80/155,851.86 = 62,636.80/x
  3. Step 3: Cross multiply
    112,937.80x = 155,851.86 × 62,636.80
  4. Step 4: Simplify right side
    112,937.80x = 9,762,061,784.45
  5. Step 5: Solve for x
    x = 9,762,061,784.45/112,937.80
  6. Step 6: Final answer
    x = 86,437.51

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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.