Home / 91,436.49-126,176.43-51,143.28

Finding the Fourth Proportional to 91,436.49, 126,176.43 and 51,143.28

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Solution

The fourth proportional to 91,436.49, 126,176.43 and 51,143.28 is: 70,574.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,436.49 : 126,176.43 = 51,143.28 : x
  2. Step 2: Convert to fraction form
    91,436.49/126,176.43 = 51,143.28/x
  3. Step 3: Cross multiply
    91,436.49x = 126,176.43 × 51,143.28
  4. Step 4: Simplify right side
    91,436.49x = 6,453,076,488.89
  5. Step 5: Solve for x
    x = 6,453,076,488.89/91,436.49
  6. Step 6: Final answer
    x = 70,574.41

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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.