Home / 66,123.20-91,250.40-37,830.08

Finding the Fourth Proportional to 66,123.20, 91,250.40 and 37,830.08

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Solution

The fourth proportional to 66,123.20, 91,250.40 and 37,830.08 is: 52,205.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,123.20 : 91,250.40 = 37,830.08 : x
  2. Step 2: Convert to fraction form
    66,123.20/91,250.40 = 37,830.08/x
  3. Step 3: Cross multiply
    66,123.20x = 91,250.40 × 37,830.08
  4. Step 4: Simplify right side
    66,123.20x = 3,452,009,932.03
  5. Step 5: Solve for x
    x = 3,452,009,932.03/66,123.20
  6. Step 6: Final answer
    x = 52,205.73

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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.