Home / 91,878.07-126,769.56-53,615.78

Finding the Fourth Proportional to 91,878.07, 126,769.56 and 53,615.78

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Solution

The fourth proportional to 91,878.07, 126,769.56 and 53,615.78 is: 73,976.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,878.07 : 126,769.56 = 53,615.78 : x
  2. Step 2: Convert to fraction form
    91,878.07/126,769.56 = 53,615.78/x
  3. Step 3: Cross multiply
    91,878.07x = 126,769.56 × 53,615.78
  4. Step 4: Simplify right side
    91,878.07x = 6,796,848,955.52
  5. Step 5: Solve for x
    x = 6,796,848,955.52/91,878.07
  6. Step 6: Final answer
    x = 73,976.84

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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.