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Finding the Fourth Proportional to 112,702.08, 155,529 and 62,400

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Solution

The fourth proportional to 112,702.08, 155,529 and 62,400 is: 86,112.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,702.08 : 155,529 = 62,400 : x
  2. Step 2: Convert to fraction form
    112,702.08/155,529 = 62,400/x
  3. Step 3: Cross multiply
    112,702.08x = 155,529 × 62,400
  4. Step 4: Simplify right side
    112,702.08x = 9,705,009,600
  5. Step 5: Solve for x
    x = 9,705,009,600/112,702.08
  6. Step 6: Final answer
    x = 86,112.07

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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.