Home / 72,591.12-100,175.40-40,762.80

Finding the Fourth Proportional to 72,591.12, 100,175.40 and 40,762.80

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Solution

The fourth proportional to 72,591.12, 100,175.40 and 40,762.80 is: 56,252.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,591.12 : 100,175.40 = 40,762.80 : x
  2. Step 2: Convert to fraction form
    72,591.12/100,175.40 = 40,762.80/x
  3. Step 3: Cross multiply
    72,591.12x = 100,175.40 × 40,762.80
  4. Step 4: Simplify right side
    72,591.12x = 4,083,429,795.12
  5. Step 5: Solve for x
    x = 4,083,429,795.12/72,591.12
  6. Step 6: Final answer
    x = 56,252.47

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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.