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Finding the Fourth Proportional to 90,457.65, 135,674.64 and 23,902.79

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Solution

The fourth proportional to 90,457.65, 135,674.64 and 23,902.79 is: 35,851.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,457.65 : 135,674.64 = 23,902.79 : x
  2. Step 2: Convert to fraction form
    90,457.65/135,674.64 = 23,902.79/x
  3. Step 3: Cross multiply
    90,457.65x = 135,674.64 × 23,902.79
  4. Step 4: Simplify right side
    90,457.65x = 3,243,001,749.87
  5. Step 5: Solve for x
    x = 3,243,001,749.87/90,457.65
  6. Step 6: Final answer
    x = 35,851.05

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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.