Home / 91,563.15-126,342.54-51,278.61

Finding the Fourth Proportional to 91,563.15, 126,342.54 and 51,278.61

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Solution

The fourth proportional to 91,563.15, 126,342.54 and 51,278.61 is: 70,756.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,563.15 : 126,342.54 = 51,278.61 : x
  2. Step 2: Convert to fraction form
    91,563.15/126,342.54 = 51,278.61/x
  3. Step 3: Cross multiply
    91,563.15x = 126,342.54 × 51,278.61
  4. Step 4: Simplify right side
    91,563.15x = 6,478,669,835.07
  5. Step 5: Solve for x
    x = 6,478,669,835.07/91,563.15
  6. Step 6: Final answer
    x = 70,756.30

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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.