Home / 52,112.50-78,168.19-12,669.66

Finding the Fourth Proportional to 52,112.50, 78,168.19 and 12,669.66

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Solution

The fourth proportional to 52,112.50, 78,168.19 and 12,669.66 is: 19,004.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,112.50 : 78,168.19 = 12,669.66 : x
  2. Step 2: Convert to fraction form
    52,112.50/78,168.19 = 12,669.66/x
  3. Step 3: Cross multiply
    52,112.50x = 78,168.19 × 12,669.66
  4. Step 4: Simplify right side
    52,112.50x = 990,364,390.12
  5. Step 5: Solve for x
    x = 990,364,390.12/52,112.50
  6. Step 6: Final answer
    x = 19,004.35

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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.