Home / 91,049.40-136,501.20-38,415.60

Finding the Fourth Proportional to 91,049.40, 136,501.20 and 38,415.60

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Solution

The fourth proportional to 91,049.40, 136,501.20 and 38,415.60 is: 57,592.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,049.40 : 136,501.20 = 38,415.60 : x
  2. Step 2: Convert to fraction form
    91,049.40/136,501.20 = 38,415.60/x
  3. Step 3: Cross multiply
    91,049.40x = 136,501.20 × 38,415.60
  4. Step 4: Simplify right side
    91,049.40x = 5,243,775,498.72
  5. Step 5: Solve for x
    x = 5,243,775,498.72/91,049.40
  6. Step 6: Final answer
    x = 57,592.64

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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.