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Finding the Fourth Proportional to 72,330.84, 99,817.88 and 40,499.64

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Solution

The fourth proportional to 72,330.84, 99,817.88 and 40,499.64 is: 55,890.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,330.84 : 99,817.88 = 40,499.64 : x
  2. Step 2: Convert to fraction form
    72,330.84/99,817.88 = 40,499.64/x
  3. Step 3: Cross multiply
    72,330.84x = 99,817.88 × 40,499.64
  4. Step 4: Simplify right side
    72,330.84x = 4,042,588,003.07
  5. Step 5: Solve for x
    x = 4,042,588,003.07/72,330.84
  6. Step 6: Final answer
    x = 55,890.24

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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.