Home / 72,590.42-100,172.18-40,760.66

Finding the Fourth Proportional to 72,590.42, 100,172.18 and 40,760.66

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Solution

The fourth proportional to 72,590.42, 100,172.18 and 40,760.66 is: 56,248.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,590.42 : 100,172.18 = 40,760.66 : x
  2. Step 2: Convert to fraction form
    72,590.42/100,172.18 = 40,760.66/x
  3. Step 3: Cross multiply
    72,590.42x = 100,172.18 × 40,760.66
  4. Step 4: Simplify right side
    72,590.42x = 4,083,083,771.48
  5. Step 5: Solve for x
    x = 4,083,083,771.48/72,590.42
  6. Step 6: Final answer
    x = 56,248.25

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1.5x scale

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.