Home / 76,307.18-114,415.81-31,315.12

Finding the Fourth Proportional to 76,307.18, 114,415.81 and 31,315.12

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Solution

The fourth proportional to 76,307.18, 114,415.81 and 31,315.12 is: 46,954.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,307.18 : 114,415.81 = 31,315.12 : x
  2. Step 2: Convert to fraction form
    76,307.18/114,415.81 = 31,315.12/x
  3. Step 3: Cross multiply
    76,307.18x = 114,415.81 × 31,315.12
  4. Step 4: Simplify right side
    76,307.18x = 3,582,944,455.72
  5. Step 5: Solve for x
    x = 3,582,944,455.72/76,307.18
  6. Step 6: Final answer
    x = 46,954.23

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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.