Home / 72,481.36-99,981.80-45,581.20

Finding the Fourth Proportional to 72,481.36, 99,981.80 and 45,581.20

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Solution

The fourth proportional to 72,481.36, 99,981.80 and 45,581.20 is: 62,875.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,481.36 : 99,981.80 = 45,581.20 : x
  2. Step 2: Convert to fraction form
    72,481.36/99,981.80 = 45,581.20/x
  3. Step 3: Cross multiply
    72,481.36x = 99,981.80 × 45,581.20
  4. Step 4: Simplify right side
    72,481.36x = 4,557,290,422.16
  5. Step 5: Solve for x
    x = 4,557,290,422.16/72,481.36
  6. Step 6: Final answer
    x = 62,875.34

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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.