Home / 91,705.70-137,558.55-56,665.10

Finding the Fourth Proportional to 91,705.70, 137,558.55 and 56,665.10

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Solution

The fourth proportional to 91,705.70, 137,558.55 and 56,665.10 is: 84,997.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,705.70 : 137,558.55 = 56,665.10 : x
  2. Step 2: Convert to fraction form
    91,705.70/137,558.55 = 56,665.10/x
  3. Step 3: Cross multiply
    91,705.70x = 137,558.55 × 56,665.10
  4. Step 4: Simplify right side
    91,705.70x = 7,794,768,991.61
  5. Step 5: Solve for x
    x = 7,794,768,991.61/91,705.70
  6. Step 6: Final answer
    x = 84,997.65

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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.