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Finding the Fourth Proportional to 72,493.04, 99,813.06 and 65,850.03

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Solution

The fourth proportional to 72,493.04, 99,813.06 and 65,850.03 is: 90,666.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,493.04 : 99,813.06 = 65,850.03 : x
  2. Step 2: Convert to fraction form
    72,493.04/99,813.06 = 65,850.03/x
  3. Step 3: Cross multiply
    72,493.04x = 99,813.06 × 65,850.03
  4. Step 4: Simplify right side
    72,493.04x = 6,572,692,995.39
  5. Step 5: Solve for x
    x = 6,572,692,995.39/72,493.04
  6. Step 6: Final answer
    x = 90,666.54

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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.