Home / 81,645.61-112,664.72-45,828.70

Finding the Fourth Proportional to 81,645.61, 112,664.72 and 45,828.70

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Solution

The fourth proportional to 81,645.61, 112,664.72 and 45,828.70 is: 63,240.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,645.61 : 112,664.72 = 45,828.70 : x
  2. Step 2: Convert to fraction form
    81,645.61/112,664.72 = 45,828.70/x
  3. Step 3: Cross multiply
    81,645.61x = 112,664.72 × 45,828.70
  4. Step 4: Simplify right side
    81,645.61x = 5,163,277,142.66
  5. Step 5: Solve for x
    x = 5,163,277,142.66/81,645.61
  6. Step 6: Final answer
    x = 63,240.11

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1.5x scale

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.