Home / 84,330.72-126,233.64-53,100.36

Finding the Fourth Proportional to 84,330.72, 126,233.64 and 53,100.36

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Solution

The fourth proportional to 84,330.72, 126,233.64 and 53,100.36 is: 79,485.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,330.72 : 126,233.64 = 53,100.36 : x
  2. Step 2: Convert to fraction form
    84,330.72/126,233.64 = 53,100.36/x
  3. Step 3: Cross multiply
    84,330.72x = 126,233.64 × 53,100.36
  4. Step 4: Simplify right side
    84,330.72x = 6,703,051,728.11
  5. Step 5: Solve for x
    x = 6,703,051,728.11/84,330.72
  6. Step 6: Final answer
    x = 79,485.29

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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.