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Finding the Fourth Proportional to 72,717.98, 100,268.08 and 51,200.85

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Solution

The fourth proportional to 72,717.98, 100,268.08 and 51,200.85 is: 70,598.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,717.98 : 100,268.08 = 51,200.85 : x
  2. Step 2: Convert to fraction form
    72,717.98/100,268.08 = 51,200.85/x
  3. Step 3: Cross multiply
    72,717.98x = 100,268.08 × 51,200.85
  4. Step 4: Simplify right side
    72,717.98x = 5,133,810,748.87
  5. Step 5: Solve for x
    x = 5,133,810,748.87/72,717.98
  6. Step 6: Final answer
    x = 70,598.92

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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.