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Finding the Fourth Proportional to 145,682.61, 218,523.60 and 45,851.53

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Solution

The fourth proportional to 145,682.61, 218,523.60 and 45,851.53 is: 68,777.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,682.61 : 218,523.60 = 45,851.53 : x
  2. Step 2: Convert to fraction form
    145,682.61/218,523.60 = 45,851.53/x
  3. Step 3: Cross multiply
    145,682.61x = 218,523.60 × 45,851.53
  4. Step 4: Simplify right side
    145,682.61x = 10,019,641,825.17
  5. Step 5: Solve for x
    x = 10,019,641,825.17/145,682.61
  6. Step 6: Final answer
    x = 68,777.20

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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.