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Finding the Fourth Proportional to 145,670.63, 218,506.01 and 40,490.51

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Solution

The fourth proportional to 145,670.63, 218,506.01 and 40,490.51 is: 60,735.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,670.63 : 218,506.01 = 40,490.51 : x
  2. Step 2: Convert to fraction form
    145,670.63/218,506.01 = 40,490.51/x
  3. Step 3: Cross multiply
    145,670.63x = 218,506.01 × 40,490.51
  4. Step 4: Simplify right side
    145,670.63x = 8,847,418,487.98
  5. Step 5: Solve for x
    x = 8,847,418,487.98/145,670.63
  6. Step 6: Final answer
    x = 60,735.78

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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.