Home / 84,019.02-126,030.96-31,418.46

Finding the Fourth Proportional to 84,019.02, 126,030.96 and 31,418.46

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Solution

The fourth proportional to 84,019.02, 126,030.96 and 31,418.46 is: 47,128.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,019.02 : 126,030.96 = 31,418.46 : x
  2. Step 2: Convert to fraction form
    84,019.02/126,030.96 = 31,418.46/x
  3. Step 3: Cross multiply
    84,019.02x = 126,030.96 × 31,418.46
  4. Step 4: Simplify right side
    84,019.02x = 3,959,698,675.52
  5. Step 5: Solve for x
    x = 3,959,698,675.52/84,019.02
  6. Step 6: Final answer
    x = 47,128.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.