Home / 81,787.07-112,865.51-45,488.84

Finding the Fourth Proportional to 81,787.07, 112,865.51 and 45,488.84

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Solution

The fourth proportional to 81,787.07, 112,865.51 and 45,488.84 is: 62,774.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,787.07 : 112,865.51 = 45,488.84 : x
  2. Step 2: Convert to fraction form
    81,787.07/112,865.51 = 45,488.84/x
  3. Step 3: Cross multiply
    81,787.07x = 112,865.51 × 45,488.84
  4. Step 4: Simplify right side
    81,787.07x = 5,134,121,521.79
  5. Step 5: Solve for x
    x = 5,134,121,521.79/81,787.07
  6. Step 6: Final answer
    x = 62,774.25

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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.