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Finding the Fourth Proportional to 81,607.60, 112,658.38 and 63,415.44

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Solution

The fourth proportional to 81,607.60, 112,658.38 and 63,415.44 is: 87,544.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,607.60 : 112,658.38 = 63,415.44 : x
  2. Step 2: Convert to fraction form
    81,607.60/112,658.38 = 63,415.44/x
  3. Step 3: Cross multiply
    81,607.60x = 112,658.38 × 63,415.44
  4. Step 4: Simplify right side
    81,607.60x = 7,144,280,737.39
  5. Step 5: Solve for x
    x = 7,144,280,737.39/81,607.60
  6. Step 6: Final answer
    x = 87,544.31

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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.