Home / 91,661.25-126,502.65-51,378.87

Finding the Fourth Proportional to 91,661.25, 126,502.65 and 51,378.87

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Solution

The fourth proportional to 91,661.25, 126,502.65 and 51,378.87 is: 70,908.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,661.25 : 126,502.65 = 51,378.87 : x
  2. Step 2: Convert to fraction form
    91,661.25/126,502.65 = 51,378.87/x
  3. Step 3: Cross multiply
    91,661.25x = 126,502.65 × 51,378.87
  4. Step 4: Simplify right side
    91,661.25x = 6,499,563,209.01
  5. Step 5: Solve for x
    x = 6,499,563,209.01/91,661.25
  6. Step 6: Final answer
    x = 70,908.52

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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.