Home / 81,774.10-112,851.45-45,964

Finding the Fourth Proportional to 81,774.10, 112,851.45 and 45,964

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Solution

The fourth proportional to 81,774.10, 112,851.45 and 45,964 is: 63,432.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,774.10 : 112,851.45 = 45,964 : x
  2. Step 2: Convert to fraction form
    81,774.10/112,851.45 = 45,964/x
  3. Step 3: Cross multiply
    81,774.10x = 112,851.45 × 45,964
  4. Step 4: Simplify right side
    81,774.10x = 5,187,104,047.80
  5. Step 5: Solve for x
    x = 5,187,104,047.80/81,774.10
  6. Step 6: Final answer
    x = 63,432.11

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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.