Home / 86,355.21-129,366.63-52,977.81

Finding the Fourth Proportional to 86,355.21, 129,366.63 and 52,977.81

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Solution

The fourth proportional to 86,355.21, 129,366.63 and 52,977.81 is: 79,364.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,355.21 : 129,366.63 = 52,977.81 : x
  2. Step 2: Convert to fraction form
    86,355.21/129,366.63 = 52,977.81/x
  3. Step 3: Cross multiply
    86,355.21x = 129,366.63 × 52,977.81
  4. Step 4: Simplify right side
    86,355.21x = 6,853,560,744.48
  5. Step 5: Solve for x
    x = 6,853,560,744.48/86,355.21
  6. Step 6: Final answer
    x = 79,364.76

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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.