Home / 85,634.47-128,448.63-22,454.11

Finding the Fourth Proportional to 85,634.47, 128,448.63 and 22,454.11

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Solution

The fourth proportional to 85,634.47, 128,448.63 and 22,454.11 is: 33,680.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,634.47 : 128,448.63 = 22,454.11 : x
  2. Step 2: Convert to fraction form
    85,634.47/128,448.63 = 22,454.11/x
  3. Step 3: Cross multiply
    85,634.47x = 128,448.63 × 22,454.11
  4. Step 4: Simplify right side
    85,634.47x = 2,884,199,667.37
  5. Step 5: Solve for x
    x = 2,884,199,667.37/85,634.47
  6. Step 6: Final answer
    x = 33,680.36

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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.