Home / 86,758.89-119,725-47,998.14

Finding the Fourth Proportional to 86,758.89, 119,725 and 47,998.14

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Solution

The fourth proportional to 86,758.89, 119,725 and 47,998.14 is: 66,236.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,758.89 : 119,725 = 47,998.14 : x
  2. Step 2: Convert to fraction form
    86,758.89/119,725 = 47,998.14/x
  3. Step 3: Cross multiply
    86,758.89x = 119,725 × 47,998.14
  4. Step 4: Simplify right side
    86,758.89x = 5,746,577,311.50
  5. Step 5: Solve for x
    x = 5,746,577,311.50/86,758.89
  6. Step 6: Final answer
    x = 66,236.18

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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.