Home / 89,490.08-133,943.04-65,791.36

Finding the Fourth Proportional to 89,490.08, 133,943.04 and 65,791.36

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Solution

The fourth proportional to 89,490.08, 133,943.04 and 65,791.36 is: 98,472.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,490.08 : 133,943.04 = 65,791.36 : x
  2. Step 2: Convert to fraction form
    89,490.08/133,943.04 = 65,791.36/x
  3. Step 3: Cross multiply
    89,490.08x = 133,943.04 × 65,791.36
  4. Step 4: Simplify right side
    89,490.08x = 8,812,294,764.13
  5. Step 5: Solve for x
    x = 8,812,294,764.13/89,490.08
  6. Step 6: Final answer
    x = 98,472.31

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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.