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Finding the Fourth Proportional to 91,548.40, 126,348.96 and 51,264.40

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Solution

The fourth proportional to 91,548.40, 126,348.96 and 51,264.40 is: 70,751.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,548.40 : 126,348.96 = 51,264.40 : x
  2. Step 2: Convert to fraction form
    91,548.40/126,348.96 = 51,264.40/x
  3. Step 3: Cross multiply
    91,548.40x = 126,348.96 × 51,264.40
  4. Step 4: Simplify right side
    91,548.40x = 6,477,203,625.02
  5. Step 5: Solve for x
    x = 6,477,203,625.02/91,548.40
  6. Step 6: Final answer
    x = 70,751.69

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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.