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Finding the Fourth Proportional to 66,664.76, 99,887.78 and 40,377.02

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Solution

The fourth proportional to 66,664.76, 99,887.78 and 40,377.02 is: 60,499.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,664.76 : 99,887.78 = 40,377.02 : x
  2. Step 2: Convert to fraction form
    66,664.76/99,887.78 = 40,377.02/x
  3. Step 3: Cross multiply
    66,664.76x = 99,887.78 × 40,377.02
  4. Step 4: Simplify right side
    66,664.76x = 4,033,170,492.32
  5. Step 5: Solve for x
    x = 4,033,170,492.32/66,664.76
  6. Step 6: Final answer
    x = 60,499.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.