Home / 81,031.59-111,829.21-45,228.58

Finding the Fourth Proportional to 81,031.59, 111,829.21 and 45,228.58

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Solution

The fourth proportional to 81,031.59, 111,829.21 and 45,228.58 is: 62,418.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,031.59 : 111,829.21 = 45,228.58 : x
  2. Step 2: Convert to fraction form
    81,031.59/111,829.21 = 45,228.58/x
  3. Step 3: Cross multiply
    81,031.59x = 111,829.21 × 45,228.58
  4. Step 4: Simplify right side
    81,031.59x = 5,057,875,978.18
  5. Step 5: Solve for x
    x = 5,057,875,978.18/81,031.59
  6. Step 6: Final answer
    x = 62,418.57

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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.