Home / 51,410.40-77,130.36-21,418.80

Finding the Fourth Proportional to 51,410.40, 77,130.36 and 21,418.80

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Solution

The fourth proportional to 51,410.40, 77,130.36 and 21,418.80 is: 32,134.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,410.40 : 77,130.36 = 21,418.80 : x
  2. Step 2: Convert to fraction form
    51,410.40/77,130.36 = 21,418.80/x
  3. Step 3: Cross multiply
    51,410.40x = 77,130.36 × 21,418.80
  4. Step 4: Simplify right side
    51,410.40x = 1,652,039,754.77
  5. Step 5: Solve for x
    x = 1,652,039,754.77/51,410.40
  6. Step 6: Final answer
    x = 32,134.35

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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.