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Finding the Fourth Proportional to 72,719.48, 100,270.15 and 51,202.35

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Solution

The fourth proportional to 72,719.48, 100,270.15 and 51,202.35 is: 70,600.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,719.48 : 100,270.15 = 51,202.35 : x
  2. Step 2: Convert to fraction form
    72,719.48/100,270.15 = 51,202.35/x
  3. Step 3: Cross multiply
    72,719.48x = 100,270.15 × 51,202.35
  4. Step 4: Simplify right side
    72,719.48x = 5,134,067,058.84
  5. Step 5: Solve for x
    x = 5,134,067,058.84/72,719.48
  6. Step 6: Final answer
    x = 70,600.99

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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.