Home / 85,511.90-117,929.76-71,219.18

Finding the Fourth Proportional to 85,511.90, 117,929.76 and 71,219.18

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Solution

The fourth proportional to 85,511.90, 117,929.76 and 71,219.18 is: 98,218.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,511.90 : 117,929.76 = 71,219.18 : x
  2. Step 2: Convert to fraction form
    85,511.90/117,929.76 = 71,219.18/x
  3. Step 3: Cross multiply
    85,511.90x = 117,929.76 × 71,219.18
  4. Step 4: Simplify right side
    85,511.90x = 8,398,860,804.80
  5. Step 5: Solve for x
    x = 8,398,860,804.80/85,511.90
  6. Step 6: Final answer
    x = 98,218.62

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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.