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Finding the Fourth Proportional to 86,660.46, 129,980.70 and 23,476.86

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Solution

The fourth proportional to 86,660.46, 129,980.70 and 23,476.86 is: 35,212.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,660.46 : 129,980.70 = 23,476.86 : x
  2. Step 2: Convert to fraction form
    86,660.46/129,980.70 = 23,476.86/x
  3. Step 3: Cross multiply
    86,660.46x = 129,980.70 × 23,476.86
  4. Step 4: Simplify right side
    86,660.46x = 3,051,538,696.60
  5. Step 5: Solve for x
    x = 3,051,538,696.60/86,660.46
  6. Step 6: Final answer
    x = 35,212.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.