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Finding the Fourth Proportional to 72,307.94, 99,794.34 and 40,483.44

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Solution

The fourth proportional to 72,307.94, 99,794.34 and 40,483.44 is: 55,872.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,307.94 : 99,794.34 = 40,483.44 : x
  2. Step 2: Convert to fraction form
    72,307.94/99,794.34 = 40,483.44/x
  3. Step 3: Cross multiply
    72,307.94x = 99,794.34 × 40,483.44
  4. Step 4: Simplify right side
    72,307.94x = 4,040,018,175.73
  5. Step 5: Solve for x
    x = 4,040,018,175.73/72,307.94
  6. Step 6: Final answer
    x = 55,872.40

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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.