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Finding the Fourth Proportional to 85,403.04, 128,104.08 and 29,243.64

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Solution

The fourth proportional to 85,403.04, 128,104.08 and 29,243.64 is: 43,865.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,403.04 : 128,104.08 = 29,243.64 : x
  2. Step 2: Convert to fraction form
    85,403.04/128,104.08 = 29,243.64/x
  3. Step 3: Cross multiply
    85,403.04x = 128,104.08 × 29,243.64
  4. Step 4: Simplify right side
    85,403.04x = 3,746,229,598.05
  5. Step 5: Solve for x
    x = 3,746,229,598.05/85,403.04
  6. Step 6: Final answer
    x = 43,865.30

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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.