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Finding the Fourth Proportional to 66,347.20, 91,558.20 and 37,666.60

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Solution

The fourth proportional to 66,347.20, 91,558.20 and 37,666.60 is: 51,979.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,347.20 : 91,558.20 = 37,666.60 : x
  2. Step 2: Convert to fraction form
    66,347.20/91,558.20 = 37,666.60/x
  3. Step 3: Cross multiply
    66,347.20x = 91,558.20 × 37,666.60
  4. Step 4: Simplify right side
    66,347.20x = 3,448,686,096.12
  5. Step 5: Solve for x
    x = 3,448,686,096.12/66,347.20
  6. Step 6: Final answer
    x = 51,979.38

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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.