Home / 91,731.08-126,586.80-51,443.91

Finding the Fourth Proportional to 91,731.08, 126,586.80 and 51,443.91

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Solution

The fourth proportional to 91,731.08, 126,586.80 and 51,443.91 is: 70,991.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,731.08 : 126,586.80 = 51,443.91 : x
  2. Step 2: Convert to fraction form
    91,731.08/126,586.80 = 51,443.91/x
  3. Step 3: Cross multiply
    91,731.08x = 126,586.80 × 51,443.91
  4. Step 4: Simplify right side
    91,731.08x = 6,512,119,946.39
  5. Step 5: Solve for x
    x = 6,512,119,946.39/91,731.08
  6. Step 6: Final answer
    x = 70,991.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.