Home / 91,723.60-137,455.80-63,989.20

Finding the Fourth Proportional to 91,723.60, 137,455.80 and 63,989.20

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Solution

The fourth proportional to 91,723.60, 137,455.80 and 63,989.20 is: 95,893.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,723.60 : 137,455.80 = 63,989.20 : x
  2. Step 2: Convert to fraction form
    91,723.60/137,455.80 = 63,989.20/x
  3. Step 3: Cross multiply
    91,723.60x = 137,455.80 × 63,989.20
  4. Step 4: Simplify right side
    91,723.60x = 8,795,686,677.36
  5. Step 5: Solve for x
    x = 8,795,686,677.36/91,723.60
  6. Step 6: Final answer
    x = 95,893.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.