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Finding the Fourth Proportional to 145,590.81, 218,387.42 and 45,748.79

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Solution

The fourth proportional to 145,590.81, 218,387.42 and 45,748.79 is: 68,623.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,590.81 : 218,387.42 = 45,748.79 : x
  2. Step 2: Convert to fraction form
    145,590.81/218,387.42 = 45,748.79/x
  3. Step 3: Cross multiply
    145,590.81x = 218,387.42 × 45,748.79
  4. Step 4: Simplify right side
    145,590.81x = 9,990,960,216.22
  5. Step 5: Solve for x
    x = 9,990,960,216.22/145,590.81
  6. Step 6: Final answer
    x = 68,623.56

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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.