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Finding the Fourth Proportional to 90,356.10, 135,534.15 and 43,700.10

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Solution

The fourth proportional to 90,356.10, 135,534.15 and 43,700.10 is: 65,550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,356.10 : 135,534.15 = 43,700.10 : x
  2. Step 2: Convert to fraction form
    90,356.10/135,534.15 = 43,700.10/x
  3. Step 3: Cross multiply
    90,356.10x = 135,534.15 × 43,700.10
  4. Step 4: Simplify right side
    90,356.10x = 5,922,855,908.42
  5. Step 5: Solve for x
    x = 5,922,855,908.42/90,356.10
  6. Step 6: Final answer
    x = 65,550.15

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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.