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Finding the Fourth Proportional to 72,069.66, 99,401.40 and 62,014.95

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Solution

The fourth proportional to 72,069.66, 99,401.40 and 62,014.95 is: 85,533.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,069.66 : 99,401.40 = 62,014.95 : x
  2. Step 2: Convert to fraction form
    72,069.66/99,401.40 = 62,014.95/x
  3. Step 3: Cross multiply
    72,069.66x = 99,401.40 × 62,014.95
  4. Step 4: Simplify right side
    72,069.66x = 6,164,372,850.93
  5. Step 5: Solve for x
    x = 6,164,372,850.93/72,069.66
  6. Step 6: Final answer
    x = 85,533.54

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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.