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Finding the Fourth Proportional to 72,070.99, 108,116.82 and 22,155.28

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Solution

The fourth proportional to 72,070.99, 108,116.82 and 22,155.28 is: 33,236.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,070.99 : 108,116.82 = 22,155.28 : x
  2. Step 2: Convert to fraction form
    72,070.99/108,116.82 = 22,155.28/x
  3. Step 3: Cross multiply
    72,070.99x = 108,116.82 × 22,155.28
  4. Step 4: Simplify right side
    72,070.99x = 2,395,358,149.52
  5. Step 5: Solve for x
    x = 2,395,358,149.52/72,070.99
  6. Step 6: Final answer
    x = 33,236.09

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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.