Home / 51,487.20-77,279.40-31,804.20

Finding the Fourth Proportional to 51,487.20, 77,279.40 and 31,804.20

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Solution

The fourth proportional to 51,487.20, 77,279.40 and 31,804.20 is: 47,736.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,487.20 : 77,279.40 = 31,804.20 : x
  2. Step 2: Convert to fraction form
    51,487.20/77,279.40 = 31,804.20/x
  3. Step 3: Cross multiply
    51,487.20x = 77,279.40 × 31,804.20
  4. Step 4: Simplify right side
    51,487.20x = 2,457,809,493.48
  5. Step 5: Solve for x
    x = 2,457,809,493.48/51,487.20
  6. Step 6: Final answer
    x = 47,736.32

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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.