Home / 78,205.28-108,012.33-53,011.04

Finding the Fourth Proportional to 78,205.28, 108,012.33 and 53,011.04

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Solution

The fourth proportional to 78,205.28, 108,012.33 and 53,011.04 is: 73,215.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,205.28 : 108,012.33 = 53,011.04 : x
  2. Step 2: Convert to fraction form
    78,205.28/108,012.33 = 53,011.04/x
  3. Step 3: Cross multiply
    78,205.28x = 108,012.33 × 53,011.04
  4. Step 4: Simplify right side
    78,205.28x = 5,725,845,946.12
  5. Step 5: Solve for x
    x = 5,725,845,946.12/78,205.28
  6. Step 6: Final answer
    x = 73,215.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.