Home / 81,102.40-121,667.04-28,498.24

Finding the Fourth Proportional to 81,102.40, 121,667.04 and 28,498.24

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Solution

The fourth proportional to 81,102.40, 121,667.04 and 28,498.24 is: 42,752.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,102.40 : 121,667.04 = 28,498.24 : x
  2. Step 2: Convert to fraction form
    81,102.40/121,667.04 = 28,498.24/x
  3. Step 3: Cross multiply
    81,102.40x = 121,667.04 × 28,498.24
  4. Step 4: Simplify right side
    81,102.40x = 3,467,296,506.01
  5. Step 5: Solve for x
    x = 3,467,296,506.01/81,102.40
  6. Step 6: Final answer
    x = 42,752.08

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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.