Home / 71,390.40-98,513.34-39,558.62

Finding the Fourth Proportional to 71,390.40, 98,513.34 and 39,558.62

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Solution

The fourth proportional to 71,390.40, 98,513.34 and 39,558.62 is: 54,587.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,390.40 : 98,513.34 = 39,558.62 : x
  2. Step 2: Convert to fraction form
    71,390.40/98,513.34 = 39,558.62/x
  3. Step 3: Cross multiply
    71,390.40x = 98,513.34 × 39,558.62
  4. Step 4: Simplify right side
    71,390.40x = 3,897,051,781.99
  5. Step 5: Solve for x
    x = 3,897,051,781.99/71,390.40
  6. Step 6: Final answer
    x = 54,587.90

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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.