Home / 85,530.30-128,295.52-23,200.80

Finding the Fourth Proportional to 85,530.30, 128,295.52 and 23,200.80

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Solution

The fourth proportional to 85,530.30, 128,295.52 and 23,200.80 is: 34,801.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,530.30 : 128,295.52 = 23,200.80 : x
  2. Step 2: Convert to fraction form
    85,530.30/128,295.52 = 23,200.80/x
  3. Step 3: Cross multiply
    85,530.30x = 128,295.52 × 23,200.80
  4. Step 4: Simplify right side
    85,530.30x = 2,976,558,700.42
  5. Step 5: Solve for x
    x = 2,976,558,700.42/85,530.30
  6. Step 6: Final answer
    x = 34,801.22

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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.