Home / 71,385.20-98,511.48-39,556.16

Finding the Fourth Proportional to 71,385.20, 98,511.48 and 39,556.16

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Solution

The fourth proportional to 71,385.20, 98,511.48 and 39,556.16 is: 54,587.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,385.20 : 98,511.48 = 39,556.16 : x
  2. Step 2: Convert to fraction form
    71,385.20/98,511.48 = 39,556.16/x
  3. Step 3: Cross multiply
    71,385.20x = 98,511.48 × 39,556.16
  4. Step 4: Simplify right side
    71,385.20x = 3,896,735,864.72
  5. Step 5: Solve for x
    x = 3,896,735,864.72/71,385.20
  6. Step 6: Final answer
    x = 54,587.45

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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.