Home / 87,813.34-121,196.06-57,685.93

Finding the Fourth Proportional to 87,813.34, 121,196.06 and 57,685.93

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Solution

The fourth proportional to 87,813.34, 121,196.06 and 57,685.93 is: 79,615.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,813.34 : 121,196.06 = 57,685.93 : x
  2. Step 2: Convert to fraction form
    87,813.34/121,196.06 = 57,685.93/x
  3. Step 3: Cross multiply
    87,813.34x = 121,196.06 × 57,685.93
  4. Step 4: Simplify right side
    87,813.34x = 6,991,307,145.01
  5. Step 5: Solve for x
    x = 6,991,307,145.01/87,813.34
  6. Step 6: Final answer
    x = 79,615.55

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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.