Home / 71,113.20-98,135.60-39,284.32

Finding the Fourth Proportional to 71,113.20, 98,135.60 and 39,284.32

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Solution

The fourth proportional to 71,113.20, 98,135.60 and 39,284.32 is: 54,212.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,113.20 : 98,135.60 = 39,284.32 : x
  2. Step 2: Convert to fraction form
    71,113.20/98,135.60 = 39,284.32/x
  3. Step 3: Cross multiply
    71,113.20x = 98,135.60 × 39,284.32
  4. Step 4: Simplify right side
    71,113.20x = 3,855,190,313.79
  5. Step 5: Solve for x
    x = 3,855,190,313.79/71,113.20
  6. Step 6: Final answer
    x = 54,212.02

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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.