Home / 51,861.09-71,569.23-30,640.32

Finding the Fourth Proportional to 51,861.09, 71,569.23 and 30,640.32

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Solution

The fourth proportional to 51,861.09, 71,569.23 and 30,640.32 is: 42,284.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,861.09 : 71,569.23 = 30,640.32 : x
  2. Step 2: Convert to fraction form
    51,861.09/71,569.23 = 30,640.32/x
  3. Step 3: Cross multiply
    51,861.09x = 71,569.23 × 30,640.32
  4. Step 4: Simplify right side
    51,861.09x = 2,192,904,109.35
  5. Step 5: Solve for x
    x = 2,192,904,109.35/51,861.09
  6. Step 6: Final answer
    x = 42,284.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.