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Finding the Fourth Proportional to 86,314.76, 119,085.86 and 70,371.80

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Solution

The fourth proportional to 86,314.76, 119,085.86 and 70,371.80 is: 97,089.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,314.76 : 119,085.86 = 70,371.80 : x
  2. Step 2: Convert to fraction form
    86,314.76/119,085.86 = 70,371.80/x
  3. Step 3: Cross multiply
    86,314.76x = 119,085.86 × 70,371.80
  4. Step 4: Simplify right side
    86,314.76x = 8,380,286,322.75
  5. Step 5: Solve for x
    x = 8,380,286,322.75/86,314.76
  6. Step 6: Final answer
    x = 97,089.84

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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.