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Finding the Fourth Proportional to 145,649.82, 218,477.61 and 45,807.90

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Solution

The fourth proportional to 145,649.82, 218,477.61 and 45,807.90 is: 68,712.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,649.82 : 218,477.61 = 45,807.90 : x
  2. Step 2: Convert to fraction form
    145,649.82/218,477.61 = 45,807.90/x
  3. Step 3: Cross multiply
    145,649.82x = 218,477.61 × 45,807.90
  4. Step 4: Simplify right side
    145,649.82x = 10,008,000,511.12
  5. Step 5: Solve for x
    x = 10,008,000,511.12/145,649.82
  6. Step 6: Final answer
    x = 68,712.76

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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.