Home / 91,917.24-126,855.08-56,128.20

Finding the Fourth Proportional to 91,917.24, 126,855.08 and 56,128.20

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Solution

The fourth proportional to 91,917.24, 126,855.08 and 56,128.20 is: 77,462.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,917.24 : 126,855.08 = 56,128.20 : x
  2. Step 2: Convert to fraction form
    91,917.24/126,855.08 = 56,128.20/x
  3. Step 3: Cross multiply
    91,917.24x = 126,855.08 × 56,128.20
  4. Step 4: Simplify right side
    91,917.24x = 7,120,147,301.26
  5. Step 5: Solve for x
    x = 7,120,147,301.26/91,917.24
  6. Step 6: Final answer
    x = 77,462.59

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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.