Home / 91,018.71-136,439.85-34,815.54

Finding the Fourth Proportional to 91,018.71, 136,439.85 and 34,815.54

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Solution

The fourth proportional to 91,018.71, 136,439.85 and 34,815.54 is: 52,189.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,018.71 : 136,439.85 = 34,815.54 : x
  2. Step 2: Convert to fraction form
    91,018.71/136,439.85 = 34,815.54/x
  3. Step 3: Cross multiply
    91,018.71x = 136,439.85 × 34,815.54
  4. Step 4: Simplify right side
    91,018.71x = 4,750,227,055.27
  5. Step 5: Solve for x
    x = 4,750,227,055.27/91,018.71
  6. Step 6: Final answer
    x = 52,189.57

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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.