Home / 91,297.38-136,938.35-31,320.93

Finding the Fourth Proportional to 91,297.38, 136,938.35 and 31,320.93

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Solution

The fourth proportional to 91,297.38, 136,938.35 and 31,320.93 is: 46,978.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,297.38 : 136,938.35 = 31,320.93 : x
  2. Step 2: Convert to fraction form
    91,297.38/136,938.35 = 31,320.93/x
  3. Step 3: Cross multiply
    91,297.38x = 136,938.35 × 31,320.93
  4. Step 4: Simplify right side
    91,297.38x = 4,289,036,318.06
  5. Step 5: Solve for x
    x = 4,289,036,318.06/91,297.38
  6. Step 6: Final answer
    x = 46,978.74

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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.