Home / 72,573.18-100,153.55-40,308.32

Finding the Fourth Proportional to 72,573.18, 100,153.55 and 40,308.32

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Solution

The fourth proportional to 72,573.18, 100,153.55 and 40,308.32 is: 55,626.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,573.18 : 100,153.55 = 40,308.32 : x
  2. Step 2: Convert to fraction form
    72,573.18/100,153.55 = 40,308.32/x
  3. Step 3: Cross multiply
    72,573.18x = 100,153.55 × 40,308.32
  4. Step 4: Simplify right side
    72,573.18x = 4,037,021,342.54
  5. Step 5: Solve for x
    x = 4,037,021,342.54/72,573.18
  6. Step 6: Final answer
    x = 55,626.90

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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.