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Finding the Fourth Proportional to 86,422.70, 119,318.37 and 70,544.90

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Solution

The fourth proportional to 86,422.70, 119,318.37 and 70,544.90 is: 97,396.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,422.70 : 119,318.37 = 70,544.90 : x
  2. Step 2: Convert to fraction form
    86,422.70/119,318.37 = 70,544.90/x
  3. Step 3: Cross multiply
    86,422.70x = 119,318.37 × 70,544.90
  4. Step 4: Simplify right side
    86,422.70x = 8,417,302,479.81
  5. Step 5: Solve for x
    x = 8,417,302,479.81/86,422.70
  6. Step 6: Final answer
    x = 97,396.89

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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.