Home / 91,712.92-126,559.38-51,431.08

Finding the Fourth Proportional to 91,712.92, 126,559.38 and 51,431.08

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Solution

The fourth proportional to 91,712.92, 126,559.38 and 51,431.08 is: 70,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,712.92 : 126,559.38 = 51,431.08 : x
  2. Step 2: Convert to fraction form
    91,712.92/126,559.38 = 51,431.08/x
  3. Step 3: Cross multiply
    91,712.92x = 126,559.38 × 51,431.08
  4. Step 4: Simplify right side
    91,712.92x = 6,509,085,597.53
  5. Step 5: Solve for x
    x = 6,509,085,597.53/91,712.92
  6. Step 6: Final answer
    x = 70,972.40

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1.5x scale

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.