Home / 84,271.76-126,417.36-28,119.32

Finding the Fourth Proportional to 84,271.76, 126,417.36 and 28,119.32

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Solution

The fourth proportional to 84,271.76, 126,417.36 and 28,119.32 is: 42,182.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,271.76 : 126,417.36 = 28,119.32 : x
  2. Step 2: Convert to fraction form
    84,271.76/126,417.36 = 28,119.32/x
  3. Step 3: Cross multiply
    84,271.76x = 126,417.36 × 28,119.32
  4. Step 4: Simplify right side
    84,271.76x = 3,554,769,426.71
  5. Step 5: Solve for x
    x = 3,554,769,426.71/84,271.76
  6. Step 6: Final answer
    x = 42,182.22

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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.