Home / 51,720.39-71,381.86-31,588.85

Finding the Fourth Proportional to 51,720.39, 71,381.86 and 31,588.85

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Solution

The fourth proportional to 51,720.39, 71,381.86 and 31,588.85 is: 43,597.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,720.39 : 71,381.86 = 31,588.85 : x
  2. Step 2: Convert to fraction form
    51,720.39/71,381.86 = 31,588.85/x
  3. Step 3: Cross multiply
    51,720.39x = 71,381.86 × 31,588.85
  4. Step 4: Simplify right side
    51,720.39x = 2,254,870,967.74
  5. Step 5: Solve for x
    x = 2,254,870,967.74/51,720.39
  6. Step 6: Final answer
    x = 43,597.33

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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.