Home / 91,688.52-126,530.61-51,403.98

Finding the Fourth Proportional to 91,688.52, 126,530.61 and 51,403.98

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Solution

The fourth proportional to 91,688.52, 126,530.61 and 51,403.98 is: 70,937.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,688.52 : 126,530.61 = 51,403.98 : x
  2. Step 2: Convert to fraction form
    91,688.52/126,530.61 = 51,403.98/x
  3. Step 3: Cross multiply
    91,688.52x = 126,530.61 × 51,403.98
  4. Step 4: Simplify right side
    91,688.52x = 6,504,176,945.83
  5. Step 5: Solve for x
    x = 6,504,176,945.83/91,688.52
  6. Step 6: Final answer
    x = 70,937.75

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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.