Home / 78,658.09-108,588.40-53,298.47

Finding the Fourth Proportional to 78,658.09, 108,588.40 and 53,298.47

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Solution

The fourth proportional to 78,658.09, 108,588.40 and 53,298.47 is: 73,579.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,658.09 : 108,588.40 = 53,298.47 : x
  2. Step 2: Convert to fraction form
    78,658.09/108,588.40 = 53,298.47/x
  3. Step 3: Cross multiply
    78,658.09x = 108,588.40 × 53,298.47
  4. Step 4: Simplify right side
    78,658.09x = 5,787,595,717.97
  5. Step 5: Solve for x
    x = 5,787,595,717.97/78,658.09
  6. Step 6: Final answer
    x = 73,579.16

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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.