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Finding the Fourth Proportional to 72,369.90, 99,826.26 and 47,840.70

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Solution

The fourth proportional to 72,369.90, 99,826.26 and 47,840.70 is: 65,990.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,369.90 : 99,826.26 = 47,840.70 : x
  2. Step 2: Convert to fraction form
    72,369.90/99,826.26 = 47,840.70/x
  3. Step 3: Cross multiply
    72,369.90x = 99,826.26 × 47,840.70
  4. Step 4: Simplify right side
    72,369.90x = 4,775,758,156.78
  5. Step 5: Solve for x
    x = 4,775,758,156.78/72,369.90
  6. Step 6: Final answer
    x = 65,990.95

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.