Home / 42,002.80-63,004.20-34,129.60

Finding the Fourth Proportional to 42,002.80, 63,004.20 and 34,129.60

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Solution

The fourth proportional to 42,002.80, 63,004.20 and 34,129.60 is: 51,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,002.80 : 63,004.20 = 34,129.60 : x
  2. Step 2: Convert to fraction form
    42,002.80/63,004.20 = 34,129.60/x
  3. Step 3: Cross multiply
    42,002.80x = 63,004.20 × 34,129.60
  4. Step 4: Simplify right side
    42,002.80x = 2,150,308,144.32
  5. Step 5: Solve for x
    x = 2,150,308,144.32/42,002.80
  6. Step 6: Final answer
    x = 51,194.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.