Home / 81,403.50-112,358.70-53,147.46

Finding the Fourth Proportional to 81,403.50, 112,358.70 and 53,147.46

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Solution

The fourth proportional to 81,403.50, 112,358.70 and 53,147.46 is: 73,357.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,403.50 : 112,358.70 = 53,147.46 : x
  2. Step 2: Convert to fraction form
    81,403.50/112,358.70 = 53,147.46/x
  3. Step 3: Cross multiply
    81,403.50x = 112,358.70 × 53,147.46
  4. Step 4: Simplify right side
    81,403.50x = 5,971,579,513.90
  5. Step 5: Solve for x
    x = 5,971,579,513.90/81,403.50
  6. Step 6: Final answer
    x = 73,357.77

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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.