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Finding the Fourth Proportional to 72,862.80, 100,558.08 and 44,587.20

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Solution

The fourth proportional to 72,862.80, 100,558.08 and 44,587.20 is: 61,534.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,862.80 : 100,558.08 = 44,587.20 : x
  2. Step 2: Convert to fraction form
    72,862.80/100,558.08 = 44,587.20/x
  3. Step 3: Cross multiply
    72,862.80x = 100,558.08 × 44,587.20
  4. Step 4: Simplify right side
    72,862.80x = 4,483,603,224.58
  5. Step 5: Solve for x
    x = 4,483,603,224.58/72,862.80
  6. Step 6: Final answer
    x = 61,534.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.