Home / 91,621.08-137,410.08-51,657.30

Finding the Fourth Proportional to 91,621.08, 137,410.08 and 51,657.30

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Solution

The fourth proportional to 91,621.08, 137,410.08 and 51,657.30 is: 77,473.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,621.08 : 137,410.08 = 51,657.30 : x
  2. Step 2: Convert to fraction form
    91,621.08/137,410.08 = 51,657.30/x
  3. Step 3: Cross multiply
    91,621.08x = 137,410.08 × 51,657.30
  4. Step 4: Simplify right side
    91,621.08x = 7,098,233,725.58
  5. Step 5: Solve for x
    x = 7,098,233,725.58/91,621.08
  6. Step 6: Final answer
    x = 77,473.81

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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.