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Finding the Fourth Proportional to 66,487.37, 91,740.00 and 39,632.37

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Solution

The fourth proportional to 66,487.37, 91,740.00 and 39,632.37 is: 54,685.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,487.37 : 91,740.00 = 39,632.37 : x
  2. Step 2: Convert to fraction form
    66,487.37/91,740.00 = 39,632.37/x
  3. Step 3: Cross multiply
    66,487.37x = 91,740.00 × 39,632.37
  4. Step 4: Simplify right side
    66,487.37x = 3,635,873,428.40
  5. Step 5: Solve for x
    x = 3,635,873,428.40/66,487.37
  6. Step 6: Final answer
    x = 54,685.18

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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.