Home / 71,390.10-98,512.91-39,558.31

Finding the Fourth Proportional to 71,390.10, 98,512.91 and 39,558.31

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Solution

The fourth proportional to 71,390.10, 98,512.91 and 39,558.31 is: 54,587.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,390.10 : 98,512.91 = 39,558.31 : x
  2. Step 2: Convert to fraction form
    71,390.10/98,512.91 = 39,558.31/x
  3. Step 3: Cross multiply
    71,390.10x = 98,512.91 × 39,558.31
  4. Step 4: Simplify right side
    71,390.10x = 3,897,004,232.78
  5. Step 5: Solve for x
    x = 3,897,004,232.78/71,390.10
  6. Step 6: Final answer
    x = 54,587.46

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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.