Home / 91,678.97-126,516.20-51,392.60

Finding the Fourth Proportional to 91,678.97, 126,516.20 and 51,392.60

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Solution

The fourth proportional to 91,678.97, 126,516.20 and 51,392.60 is: 70,921.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,678.97 : 126,516.20 = 51,392.60 : x
  2. Step 2: Convert to fraction form
    91,678.97/126,516.20 = 51,392.60/x
  3. Step 3: Cross multiply
    91,678.97x = 126,516.20 × 51,392.60
  4. Step 4: Simplify right side
    91,678.97x = 6,501,996,904.89
  5. Step 5: Solve for x
    x = 6,501,996,904.89/91,678.97
  6. Step 6: Final answer
    x = 70,921.36

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1.5x scale

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.