Home / 40,945.20-61,417.80-20,164.40

Finding the Fourth Proportional to 40,945.20, 61,417.80 and 20,164.40

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Solution

The fourth proportional to 40,945.20, 61,417.80 and 20,164.40 is: 30,246.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,945.20 : 61,417.80 = 20,164.40 : x
  2. Step 2: Convert to fraction form
    40,945.20/61,417.80 = 20,164.40/x
  3. Step 3: Cross multiply
    40,945.20x = 61,417.80 × 20,164.40
  4. Step 4: Simplify right side
    40,945.20x = 1,238,453,086.32
  5. Step 5: Solve for x
    x = 1,238,453,086.32/40,945.20
  6. Step 6: Final answer
    x = 30,246.60

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1.5x scale

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.