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Finding the Fourth Proportional to 66,054.70, 90,595.01 and 63,342.11

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Solution

The fourth proportional to 66,054.70, 90,595.01 and 63,342.11 is: 86,874.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,054.70 : 90,595.01 = 63,342.11 : x
  2. Step 2: Convert to fraction form
    66,054.70/90,595.01 = 63,342.11/x
  3. Step 3: Cross multiply
    66,054.70x = 90,595.01 × 63,342.11
  4. Step 4: Simplify right side
    66,054.70x = 5,738,478,998.65
  5. Step 5: Solve for x
    x = 5,738,478,998.65/66,054.70
  6. Step 6: Final answer
    x = 86,874.65

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.