Home / 50,782.48-70,079.43-28,121.38

Finding the Fourth Proportional to 50,782.48, 70,079.43 and 28,121.38

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Solution

The fourth proportional to 50,782.48, 70,079.43 and 28,121.38 is: 38,807.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,782.48 : 70,079.43 = 28,121.38 : x
  2. Step 2: Convert to fraction form
    50,782.48/70,079.43 = 28,121.38/x
  3. Step 3: Cross multiply
    50,782.48x = 70,079.43 × 28,121.38
  4. Step 4: Simplify right side
    50,782.48x = 1,970,730,281.21
  5. Step 5: Solve for x
    x = 1,970,730,281.21/50,782.48
  6. Step 6: Final answer
    x = 38,807.29

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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.