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Finding the Fourth Proportional to 145,604.99, 218,407.32 and 45,773.91

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Solution

The fourth proportional to 145,604.99, 218,407.32 and 45,773.91 is: 68,660.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,604.99 : 218,407.32 = 45,773.91 : x
  2. Step 2: Convert to fraction form
    145,604.99/218,407.32 = 45,773.91/x
  3. Step 3: Cross multiply
    145,604.99x = 218,407.32 × 45,773.91
  4. Step 4: Simplify right side
    145,604.99x = 9,997,357,009.02
  5. Step 5: Solve for x
    x = 9,997,357,009.02/145,604.99
  6. Step 6: Final answer
    x = 68,660.81

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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.