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Finding the Fourth Proportional to 81,710.58, 112,772.79 and 49,897.92

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Solution

The fourth proportional to 81,710.58, 112,772.79 and 49,897.92 is: 68,866.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,710.58 : 112,772.79 = 49,897.92 : x
  2. Step 2: Convert to fraction form
    81,710.58/112,772.79 = 49,897.92/x
  3. Step 3: Cross multiply
    81,710.58x = 112,772.79 × 49,897.92
  4. Step 4: Simplify right side
    81,710.58x = 5,627,127,653.60
  5. Step 5: Solve for x
    x = 5,627,127,653.60/81,710.58
  6. Step 6: Final answer
    x = 68,866.57

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1.5x scale

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.