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Finding the Fourth Proportional to 145,848.60, 218,745.90 and 40,645.80

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Solution

The fourth proportional to 145,848.60, 218,745.90 and 40,645.80 is: 60,961.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,848.60 : 218,745.90 = 40,645.80 : x
  2. Step 2: Convert to fraction form
    145,848.60/218,745.90 = 40,645.80/x
  3. Step 3: Cross multiply
    145,848.60x = 218,745.90 × 40,645.80
  4. Step 4: Simplify right side
    145,848.60x = 8,891,102,102.22
  5. Step 5: Solve for x
    x = 8,891,102,102.22/145,848.60
  6. Step 6: Final answer
    x = 60,961.18

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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.