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Finding the Fourth Proportional to 66,302.90, 91,499.92 and 36,090.18

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Solution

The fourth proportional to 66,302.90, 91,499.92 and 36,090.18 is: 49,805.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,302.90 : 91,499.92 = 36,090.18 : x
  2. Step 2: Convert to fraction form
    66,302.90/91,499.92 = 36,090.18/x
  3. Step 3: Cross multiply
    66,302.90x = 91,499.92 × 36,090.18
  4. Step 4: Simplify right side
    66,302.90x = 3,302,248,582.79
  5. Step 5: Solve for x
    x = 3,302,248,582.79/66,302.90
  6. Step 6: Final answer
    x = 49,805.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.