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Finding the Fourth Proportional to 50,959.78, 70,323.18 and 28,298.20

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Solution

The fourth proportional to 50,959.78, 70,323.18 and 28,298.20 is: 39,050.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,959.78 : 70,323.18 = 28,298.20 : x
  2. Step 2: Convert to fraction form
    50,959.78/70,323.18 = 28,298.20/x
  3. Step 3: Cross multiply
    50,959.78x = 70,323.18 × 28,298.20
  4. Step 4: Simplify right side
    50,959.78x = 1,990,019,412.28
  5. Step 5: Solve for x
    x = 1,990,019,412.28/50,959.78
  6. Step 6: Final answer
    x = 39,050.78

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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.