Home / 57,217.50-78,964.80-31,726.40

Finding the Fourth Proportional to 57,217.50, 78,964.80 and 31,726.40

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Solution

The fourth proportional to 57,217.50, 78,964.80 and 31,726.40 is: 43,785.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,217.50 : 78,964.80 = 31,726.40 : x
  2. Step 2: Convert to fraction form
    57,217.50/78,964.80 = 31,726.40/x
  3. Step 3: Cross multiply
    57,217.50x = 78,964.80 × 31,726.40
  4. Step 4: Simplify right side
    57,217.50x = 2,505,268,830.72
  5. Step 5: Solve for x
    x = 2,505,268,830.72/57,217.50
  6. Step 6: Final answer
    x = 43,785.01

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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.