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Finding the Fourth Proportional to 145,838, 218,757.91 and 40,657.88

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Solution

The fourth proportional to 145,838, 218,757.91 and 40,657.88 is: 60,987.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,838 : 218,757.91 = 40,657.88 : x
  2. Step 2: Convert to fraction form
    145,838/218,757.91 = 40,657.88/x
  3. Step 3: Cross multiply
    145,838x = 218,757.91 × 40,657.88
  4. Step 4: Simplify right side
    145,838x = 8,894,232,853.83
  5. Step 5: Solve for x
    x = 8,894,232,853.83/145,838
  6. Step 6: Final answer
    x = 60,987.07

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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.