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Finding the Fourth Proportional to 45,365, 68,066.11 and 20,051.13

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Solution

The fourth proportional to 45,365, 68,066.11 and 20,051.13 is: 30,084.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,365 : 68,066.11 = 20,051.13 : x
  2. Step 2: Convert to fraction form
    45,365/68,066.11 = 20,051.13/x
  3. Step 3: Cross multiply
    45,365x = 68,066.11 × 20,051.13
  4. Step 4: Simplify right side
    45,365x = 1,364,802,420.20
  5. Step 5: Solve for x
    x = 1,364,802,420.20/45,365
  6. Step 6: Final answer
    x = 30,084.92

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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.