Home / 50,818.56-70,128-28,158.72

Finding the Fourth Proportional to 50,818.56, 70,128 and 28,158.72

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Solution

The fourth proportional to 50,818.56, 70,128 and 28,158.72 is: 38,858.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,818.56 : 70,128 = 28,158.72 : x
  2. Step 2: Convert to fraction form
    50,818.56/70,128 = 28,158.72/x
  3. Step 3: Cross multiply
    50,818.56x = 70,128 × 28,158.72
  4. Step 4: Simplify right side
    50,818.56x = 1,974,714,716.16
  5. Step 5: Solve for x
    x = 1,974,714,716.16/50,818.56
  6. Step 6: Final answer
    x = 38,858.14

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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.