Home / 82,919.90-114,339.12-56,015.72

Finding the Fourth Proportional to 82,919.90, 114,339.12 and 56,015.72

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Solution

The fourth proportional to 82,919.90, 114,339.12 and 56,015.72 is: 77,240.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,919.90 : 114,339.12 = 56,015.72 : x
  2. Step 2: Convert to fraction form
    82,919.90/114,339.12 = 56,015.72/x
  3. Step 3: Cross multiply
    82,919.90x = 114,339.12 × 56,015.72
  4. Step 4: Simplify right side
    82,919.90x = 6,404,788,130.97
  5. Step 5: Solve for x
    x = 6,404,788,130.97/82,919.90
  6. Step 6: Final answer
    x = 77,240.66

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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.