Home / 81,738.89-112,809.75-45,928.13

Finding the Fourth Proportional to 81,738.89, 112,809.75 and 45,928.13

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Solution

The fourth proportional to 81,738.89, 112,809.75 and 45,928.13 is: 63,386.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,738.89 : 112,809.75 = 45,928.13 : x
  2. Step 2: Convert to fraction form
    81,738.89/112,809.75 = 45,928.13/x
  3. Step 3: Cross multiply
    81,738.89x = 112,809.75 × 45,928.13
  4. Step 4: Simplify right side
    81,738.89x = 5,181,140,126.99
  5. Step 5: Solve for x
    x = 5,181,140,126.99/81,738.89
  6. Step 6: Final answer
    x = 63,386.48

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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.