Home / 52,083.48-78,125.26-12,640.63

Finding the Fourth Proportional to 52,083.48, 78,125.26 and 12,640.63

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Solution

The fourth proportional to 52,083.48, 78,125.26 and 12,640.63 is: 18,960.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,083.48 : 78,125.26 = 12,640.63 : x
  2. Step 2: Convert to fraction form
    52,083.48/78,125.26 = 12,640.63/x
  3. Step 3: Cross multiply
    52,083.48x = 78,125.26 × 12,640.63
  4. Step 4: Simplify right side
    52,083.48x = 987,552,668.31
  5. Step 5: Solve for x
    x = 987,552,668.31/52,083.48
  6. Step 6: Final answer
    x = 18,960.96

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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.