Home / 91,409.85-126,148.32-51,125.31

Finding the Fourth Proportional to 91,409.85, 126,148.32 and 51,125.31

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Solution

The fourth proportional to 91,409.85, 126,148.32 and 51,125.31 is: 70,554.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,409.85 : 126,148.32 = 51,125.31 : x
  2. Step 2: Convert to fraction form
    91,409.85/126,148.32 = 51,125.31/x
  3. Step 3: Cross multiply
    91,409.85x = 126,148.32 × 51,125.31
  4. Step 4: Simplify right side
    91,409.85x = 6,449,371,965.98
  5. Step 5: Solve for x
    x = 6,449,371,965.98/91,409.85
  6. Step 6: Final answer
    x = 70,554.45

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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.