Home / 72,445.10-108,686.55-28,073.30

Finding the Fourth Proportional to 72,445.10, 108,686.55 and 28,073.30

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Solution

The fourth proportional to 72,445.10, 108,686.55 and 28,073.30 is: 42,117.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,445.10 : 108,686.55 = 28,073.30 : x
  2. Step 2: Convert to fraction form
    72,445.10/108,686.55 = 28,073.30/x
  3. Step 3: Cross multiply
    72,445.10x = 108,686.55 × 28,073.30
  4. Step 4: Simplify right side
    72,445.10x = 3,051,190,124.12
  5. Step 5: Solve for x
    x = 3,051,190,124.12/72,445.10
  6. Step 6: Final answer
    x = 42,117.27

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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.