Home / 84,210.09-126,320.60-28,047.93

Finding the Fourth Proportional to 84,210.09, 126,320.60 and 28,047.93

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Solution

The fourth proportional to 84,210.09, 126,320.60 and 28,047.93 is: 42,073.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,210.09 : 126,320.60 = 28,047.93 : x
  2. Step 2: Convert to fraction form
    84,210.09/126,320.60 = 28,047.93/x
  3. Step 3: Cross multiply
    84,210.09x = 126,320.60 × 28,047.93
  4. Step 4: Simplify right side
    84,210.09x = 3,543,031,346.36
  5. Step 5: Solve for x
    x = 3,543,031,346.36/84,210.09
  6. Step 6: Final answer
    x = 42,073.72

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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.