Home / 55,921.19-83,881.77-20,385.17

Finding the Fourth Proportional to 55,921.19, 83,881.77 and 20,385.17

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Solution

The fourth proportional to 55,921.19, 83,881.77 and 20,385.17 is: 30,577.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,921.19 : 83,881.77 = 20,385.17 : x
  2. Step 2: Convert to fraction form
    55,921.19/83,881.77 = 20,385.17/x
  3. Step 3: Cross multiply
    55,921.19x = 83,881.77 × 20,385.17
  4. Step 4: Simplify right side
    55,921.19x = 1,709,943,960.05
  5. Step 5: Solve for x
    x = 1,709,943,960.05/55,921.19
  6. Step 6: Final answer
    x = 30,577.75

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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.