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Finding the Fourth Proportional to 145,477.18, 218,216.03 and 45,645.04

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Solution

The fourth proportional to 145,477.18, 218,216.03 and 45,645.04 is: 68,467.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,477.18 : 218,216.03 = 45,645.04 : x
  2. Step 2: Convert to fraction form
    145,477.18/218,216.03 = 45,645.04/x
  3. Step 3: Cross multiply
    145,477.18x = 218,216.03 × 45,645.04
  4. Step 4: Simplify right side
    145,477.18x = 9,960,478,235.07
  5. Step 5: Solve for x
    x = 9,960,478,235.07/145,477.18
  6. Step 6: Final answer
    x = 68,467.63

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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.