Home / 81,039.47-111,840.08-45,236.45

Finding the Fourth Proportional to 81,039.47, 111,840.08 and 45,236.45

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Solution

The fourth proportional to 81,039.47, 111,840.08 and 45,236.45 is: 62,429.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,039.47 : 111,840.08 = 45,236.45 : x
  2. Step 2: Convert to fraction form
    81,039.47/111,840.08 = 45,236.45/x
  3. Step 3: Cross multiply
    81,039.47x = 111,840.08 × 45,236.45
  4. Step 4: Simplify right side
    81,039.47x = 5,059,248,240.33
  5. Step 5: Solve for x
    x = 5,059,248,240.33/81,039.47
  6. Step 6: Final answer
    x = 62,429.44

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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.