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Finding the Fourth Proportional to 66,472.80, 99,606.80 and 57,666.40

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Solution

The fourth proportional to 66,472.80, 99,606.80 and 57,666.40 is: 86,410.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,472.80 : 99,606.80 = 57,666.40 : x
  2. Step 2: Convert to fraction form
    66,472.80/99,606.80 = 57,666.40/x
  3. Step 3: Cross multiply
    66,472.80x = 99,606.80 × 57,666.40
  4. Step 4: Simplify right side
    66,472.80x = 5,743,965,571.52
  5. Step 5: Solve for x
    x = 5,743,965,571.52/66,472.80
  6. Step 6: Final answer
    x = 86,410.77

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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.