Home / 51,409.20-77,128.20-25,114.80

Finding the Fourth Proportional to 51,409.20, 77,128.20 and 25,114.80

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Solution

The fourth proportional to 51,409.20, 77,128.20 and 25,114.80 is: 37,679.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,409.20 : 77,128.20 = 25,114.80 : x
  2. Step 2: Convert to fraction form
    51,409.20/77,128.20 = 25,114.80/x
  3. Step 3: Cross multiply
    51,409.20x = 77,128.20 × 25,114.80
  4. Step 4: Simplify right side
    51,409.20x = 1,937,059,317.36
  5. Step 5: Solve for x
    x = 1,937,059,317.36/51,409.20
  6. Step 6: Final answer
    x = 37,679.23

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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.