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Finding the Fourth Proportional to 90,007.80, 134,985.90 and 26,825.28

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Solution

The fourth proportional to 90,007.80, 134,985.90 and 26,825.28 is: 40,230.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,007.80 : 134,985.90 = 26,825.28 : x
  2. Step 2: Convert to fraction form
    90,007.80/134,985.90 = 26,825.28/x
  3. Step 3: Cross multiply
    90,007.80x = 134,985.90 × 26,825.28
  4. Step 4: Simplify right side
    90,007.80x = 3,621,034,563.55
  5. Step 5: Solve for x
    x = 3,621,034,563.55/90,007.80
  6. Step 6: Final answer
    x = 40,230.23

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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.