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Finding the Fourth Proportional to 66,490.60, 99,740.40 and 27,048.40

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Solution

The fourth proportional to 66,490.60, 99,740.40 and 27,048.40 is: 40,574.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,490.60 : 99,740.40 = 27,048.40 : x
  2. Step 2: Convert to fraction form
    66,490.60/99,740.40 = 27,048.40/x
  3. Step 3: Cross multiply
    66,490.60x = 99,740.40 × 27,048.40
  4. Step 4: Simplify right side
    66,490.60x = 2,697,818,235.36
  5. Step 5: Solve for x
    x = 2,697,818,235.36/66,490.60
  6. Step 6: Final answer
    x = 40,574.43

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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.