Home / 81,739.14-112,810.50-45,929.22

Finding the Fourth Proportional to 81,739.14, 112,810.50 and 45,929.22

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Solution

The fourth proportional to 81,739.14, 112,810.50 and 45,929.22 is: 63,388.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,739.14 : 112,810.50 = 45,929.22 : x
  2. Step 2: Convert to fraction form
    81,739.14/112,810.50 = 45,929.22/x
  3. Step 3: Cross multiply
    81,739.14x = 112,810.50 × 45,929.22
  4. Step 4: Simplify right side
    81,739.14x = 5,181,298,272.81
  5. Step 5: Solve for x
    x = 5,181,298,272.81/81,739.14
  6. Step 6: Final answer
    x = 63,388.22

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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.