Home / 81,451.02-112,402.25-49,619.92

Finding the Fourth Proportional to 81,451.02, 112,402.25 and 49,619.92

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Solution

The fourth proportional to 81,451.02, 112,402.25 and 49,619.92 is: 68,475.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,451.02 : 112,402.25 = 49,619.92 : x
  2. Step 2: Convert to fraction form
    81,451.02/112,402.25 = 49,619.92/x
  3. Step 3: Cross multiply
    81,451.02x = 112,402.25 × 49,619.92
  4. Step 4: Simplify right side
    81,451.02x = 5,577,390,090.81
  5. Step 5: Solve for x
    x = 5,577,390,090.81/81,451.02
  6. Step 6: Final answer
    x = 68,475.39

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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.