Home / 84,274.76-126,421.86-28,122.32

Finding the Fourth Proportional to 84,274.76, 126,421.86 and 28,122.32

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Solution

The fourth proportional to 84,274.76, 126,421.86 and 28,122.32 is: 42,186.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,274.76 : 126,421.86 = 28,122.32 : x
  2. Step 2: Convert to fraction form
    84,274.76/126,421.86 = 28,122.32/x
  3. Step 3: Cross multiply
    84,274.76x = 126,421.86 × 28,122.32
  4. Step 4: Simplify right side
    84,274.76x = 3,555,276,001.92
  5. Step 5: Solve for x
    x = 3,555,276,001.92/84,274.76
  6. Step 6: Final answer
    x = 42,186.72

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1.5x scale

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.