Home / 81,435.76-112,385.97-45,637.32

Finding the Fourth Proportional to 81,435.76, 112,385.97 and 45,637.32

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Solution

The fourth proportional to 81,435.76, 112,385.97 and 45,637.32 is: 62,982.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,435.76 : 112,385.97 = 45,637.32 : x
  2. Step 2: Convert to fraction form
    81,435.76/112,385.97 = 45,637.32/x
  3. Step 3: Cross multiply
    81,435.76x = 112,385.97 × 45,637.32
  4. Step 4: Simplify right side
    81,435.76x = 5,128,994,476.40
  5. Step 5: Solve for x
    x = 5,128,994,476.40/81,435.76
  6. Step 6: Final answer
    x = 62,982.09

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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.