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Finding the Fourth Proportional to 84,603.07, 126,904.89 and 21,423.16

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Solution

The fourth proportional to 84,603.07, 126,904.89 and 21,423.16 is: 32,134.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,603.07 : 126,904.89 = 21,423.16 : x
  2. Step 2: Convert to fraction form
    84,603.07/126,904.89 = 21,423.16/x
  3. Step 3: Cross multiply
    84,603.07x = 126,904.89 × 21,423.16
  4. Step 4: Simplify right side
    84,603.07x = 2,718,703,763.25
  5. Step 5: Solve for x
    x = 2,718,703,763.25/84,603.07
  6. Step 6: Final answer
    x = 32,134.81

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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.