Home / 78,677.14-117,931.65-31,226.53

Finding the Fourth Proportional to 78,677.14, 117,931.65 and 31,226.53

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Solution

The fourth proportional to 78,677.14, 117,931.65 and 31,226.53 is: 46,806.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,677.14 : 117,931.65 = 31,226.53 : x
  2. Step 2: Convert to fraction form
    78,677.14/117,931.65 = 31,226.53/x
  3. Step 3: Cross multiply
    78,677.14x = 117,931.65 × 31,226.53
  4. Step 4: Simplify right side
    78,677.14x = 3,682,596,206.67
  5. Step 5: Solve for x
    x = 3,682,596,206.67/78,677.14
  6. Step 6: Final answer
    x = 46,806.43

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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.