Home / 85,716.90-118,285.92-47,990.34

Finding the Fourth Proportional to 85,716.90, 118,285.92 and 47,990.34

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Solution

The fourth proportional to 85,716.90, 118,285.92 and 47,990.34 is: 66,224.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,716.90 : 118,285.92 = 47,990.34 : x
  2. Step 2: Convert to fraction form
    85,716.90/118,285.92 = 47,990.34/x
  3. Step 3: Cross multiply
    85,716.90x = 118,285.92 × 47,990.34
  4. Step 4: Simplify right side
    85,716.90x = 5,676,581,518.01
  5. Step 5: Solve for x
    x = 5,676,581,518.01/85,716.90
  6. Step 6: Final answer
    x = 66,224.76

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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.