Home / 84,018.54-126,030.21-31,417.98

Finding the Fourth Proportional to 84,018.54, 126,030.21 and 31,417.98

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Solution

The fourth proportional to 84,018.54, 126,030.21 and 31,417.98 is: 47,127.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,018.54 : 126,030.21 = 31,417.98 : x
  2. Step 2: Convert to fraction form
    84,018.54/126,030.21 = 31,417.98/x
  3. Step 3: Cross multiply
    84,018.54x = 126,030.21 × 31,417.98
  4. Step 4: Simplify right side
    84,018.54x = 3,959,614,617.18
  5. Step 5: Solve for x
    x = 3,959,614,617.18/84,018.54
  6. Step 6: Final answer
    x = 47,127.87

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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.