Home / 81,673.02-112,720.98-49,860.42

Finding the Fourth Proportional to 81,673.02, 112,720.98 and 49,860.42

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Solution

The fourth proportional to 81,673.02, 112,720.98 and 49,860.42 is: 68,814.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,673.02 : 112,720.98 = 49,860.42 : x
  2. Step 2: Convert to fraction form
    81,673.02/112,720.98 = 49,860.42/x
  3. Step 3: Cross multiply
    81,673.02x = 112,720.98 × 49,860.42
  4. Step 4: Simplify right side
    81,673.02x = 5,620,315,405.61
  5. Step 5: Solve for x
    x = 5,620,315,405.61/81,673.02
  6. Step 6: Final answer
    x = 68,814.84

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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.