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Finding the Fourth Proportional to 66,420.52, 99,670.02 and 26,974.60

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Solution

The fourth proportional to 66,420.52, 99,670.02 and 26,974.60 is: 40,477.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420.52 : 99,670.02 = 26,974.60 : x
  2. Step 2: Convert to fraction form
    66,420.52/99,670.02 = 26,974.60/x
  3. Step 3: Cross multiply
    66,420.52x = 99,670.02 × 26,974.60
  4. Step 4: Simplify right side
    66,420.52x = 2,688,558,921.49
  5. Step 5: Solve for x
    x = 2,688,558,921.49/66,420.52
  6. Step 6: Final answer
    x = 40,477.84

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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.