Home / 91,071.72-136,610.64-31,948.56

Finding the Fourth Proportional to 91,071.72, 136,610.64 and 31,948.56

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Solution

The fourth proportional to 91,071.72, 136,610.64 and 31,948.56 is: 47,923.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,071.72 : 136,610.64 = 31,948.56 : x
  2. Step 2: Convert to fraction form
    91,071.72/136,610.64 = 31,948.56/x
  3. Step 3: Cross multiply
    91,071.72x = 136,610.64 × 31,948.56
  4. Step 4: Simplify right side
    91,071.72x = 4,364,513,228.68
  5. Step 5: Solve for x
    x = 4,364,513,228.68/91,071.72
  6. Step 6: Final answer
    x = 47,923.91

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1.5x scale

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.