Home / 84,509.28-126,888.48-47,142.36

Finding the Fourth Proportional to 84,509.28, 126,888.48 and 47,142.36

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Solution

The fourth proportional to 84,509.28, 126,888.48 and 47,142.36 is: 70,783.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,509.28 : 126,888.48 = 47,142.36 : x
  2. Step 2: Convert to fraction form
    84,509.28/126,888.48 = 47,142.36/x
  3. Step 3: Cross multiply
    84,509.28x = 126,888.48 × 47,142.36
  4. Step 4: Simplify right side
    84,509.28x = 5,981,822,404.01
  5. Step 5: Solve for x
    x = 5,981,822,404.01/84,509.28
  6. Step 6: Final answer
    x = 70,783.02

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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.