Home / 52,101.92-78,152.34-12,659.51

Finding the Fourth Proportional to 52,101.92, 78,152.34 and 12,659.51

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Solution

The fourth proportional to 52,101.92, 78,152.34 and 12,659.51 is: 18,989.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,101.92 : 78,152.34 = 12,659.51 : x
  2. Step 2: Convert to fraction form
    52,101.92/78,152.34 = 12,659.51/x
  3. Step 3: Cross multiply
    52,101.92x = 78,152.34 × 12,659.51
  4. Step 4: Simplify right side
    52,101.92x = 989,370,329.75
  5. Step 5: Solve for x
    x = 989,370,329.75/52,101.92
  6. Step 6: Final answer
    x = 18,989.13

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Double scale
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Similar ratio
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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.