Home / 81,740.15-112,811.48-45,929.38

Finding the Fourth Proportional to 81,740.15, 112,811.48 and 45,929.38

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Solution

The fourth proportional to 81,740.15, 112,811.48 and 45,929.38 is: 63,388.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,740.15 : 112,811.48 = 45,929.38 : x
  2. Step 2: Convert to fraction form
    81,740.15/112,811.48 = 45,929.38/x
  3. Step 3: Cross multiply
    81,740.15x = 112,811.48 × 45,929.38
  4. Step 4: Simplify right side
    81,740.15x = 5,181,360,539.58
  5. Step 5: Solve for x
    x = 5,181,360,539.58/81,740.15
  6. Step 6: Final answer
    x = 63,388.20

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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.