Home / 91,101.24-136,655.52-28,771.76

Finding the Fourth Proportional to 91,101.24, 136,655.52 and 28,771.76

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Solution

The fourth proportional to 91,101.24, 136,655.52 and 28,771.76 is: 43,158.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,101.24 : 136,655.52 = 28,771.76 : x
  2. Step 2: Convert to fraction form
    91,101.24/136,655.52 = 28,771.76/x
  3. Step 3: Cross multiply
    91,101.24x = 136,655.52 × 28,771.76
  4. Step 4: Simplify right side
    91,101.24x = 3,931,819,824.12
  5. Step 5: Solve for x
    x = 3,931,819,824.12/91,101.24
  6. Step 6: Final answer
    x = 43,158.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.