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Finding the Fourth Proportional to 72,404.10, 108,625.05 and 28,032.30

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Solution

The fourth proportional to 72,404.10, 108,625.05 and 28,032.30 is: 42,055.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,404.10 : 108,625.05 = 28,032.30 : x
  2. Step 2: Convert to fraction form
    72,404.10/108,625.05 = 28,032.30/x
  3. Step 3: Cross multiply
    72,404.10x = 108,625.05 × 28,032.30
  4. Step 4: Simplify right side
    72,404.10x = 3,045,009,989.12
  5. Step 5: Solve for x
    x = 3,045,009,989.12/72,404.10
  6. Step 6: Final answer
    x = 42,055.77

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1.5x scale

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.