Home / 57,137.20-78,768.18-42,003.16

Finding the Fourth Proportional to 57,137.20, 78,768.18 and 42,003.16

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Solution

The fourth proportional to 57,137.20, 78,768.18 and 42,003.16 is: 57,904.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,137.20 : 78,768.18 = 42,003.16 : x
  2. Step 2: Convert to fraction form
    57,137.20/78,768.18 = 42,003.16/x
  3. Step 3: Cross multiply
    57,137.20x = 78,768.18 × 42,003.16
  4. Step 4: Simplify right side
    57,137.20x = 3,308,512,467.45
  5. Step 5: Solve for x
    x = 3,308,512,467.45/57,137.20
  6. Step 6: Final answer
    x = 57,904.70

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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.