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Finding the Fourth Proportional to 72,301.70, 99,773.44 and 40,473.74

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Solution

The fourth proportional to 72,301.70, 99,773.44 and 40,473.74 is: 55,852.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,301.70 : 99,773.44 = 40,473.74 : x
  2. Step 2: Convert to fraction form
    72,301.70/99,773.44 = 40,473.74/x
  3. Step 3: Cross multiply
    72,301.70x = 99,773.44 × 40,473.74
  4. Step 4: Simplify right side
    72,301.70x = 4,038,203,669.41
  5. Step 5: Solve for x
    x = 4,038,203,669.41/72,301.70
  6. Step 6: Final answer
    x = 55,852.13

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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.