Home / 52,102.36-78,152.46-12,659.68

Finding the Fourth Proportional to 52,102.36, 78,152.46 and 12,659.68

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Solution

The fourth proportional to 52,102.36, 78,152.46 and 12,659.68 is: 18,989.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,102.36 : 78,152.46 = 12,659.68 : x
  2. Step 2: Convert to fraction form
    52,102.36/78,152.46 = 12,659.68/x
  3. Step 3: Cross multiply
    52,102.36x = 78,152.46 × 12,659.68
  4. Step 4: Simplify right side
    52,102.36x = 989,385,134.81
  5. Step 5: Solve for x
    x = 989,385,134.81/52,102.36
  6. Step 6: Final answer
    x = 18,989.26

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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.