Home / 56,172.20-77,385.79-39,145.50

Finding the Fourth Proportional to 56,172.20, 77,385.79 and 39,145.50

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Solution

The fourth proportional to 56,172.20, 77,385.79 and 39,145.50 is: 53,928.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,172.20 : 77,385.79 = 39,145.50 : x
  2. Step 2: Convert to fraction form
    56,172.20/77,385.79 = 39,145.50/x
  3. Step 3: Cross multiply
    56,172.20x = 77,385.79 × 39,145.50
  4. Step 4: Simplify right side
    56,172.20x = 3,029,305,442.45
  5. Step 5: Solve for x
    x = 3,029,305,442.45/56,172.20
  6. Step 6: Final answer
    x = 53,928.91

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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.