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Finding the Fourth Proportional to 72,495.80, 108,570.90 and 44,502.20

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Solution

The fourth proportional to 72,495.80, 108,570.90 and 44,502.20 is: 66,647.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,495.80 : 108,570.90 = 44,502.20 : x
  2. Step 2: Convert to fraction form
    72,495.80/108,570.90 = 44,502.20/x
  3. Step 3: Cross multiply
    72,495.80x = 108,570.90 × 44,502.20
  4. Step 4: Simplify right side
    72,495.80x = 4,831,643,905.98
  5. Step 5: Solve for x
    x = 4,831,643,905.98/72,495.80
  6. Step 6: Final answer
    x = 66,647.23

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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.