Home / 72,558.13-100,124.73-40,720.88

Finding the Fourth Proportional to 72,558.13, 100,124.73 and 40,720.88

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Solution

The fourth proportional to 72,558.13, 100,124.73 and 40,720.88 is: 56,191.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,558.13 : 100,124.73 = 40,720.88 : x
  2. Step 2: Convert to fraction form
    72,558.13/100,124.73 = 40,720.88/x
  3. Step 3: Cross multiply
    72,558.13x = 100,124.73 × 40,720.88
  4. Step 4: Simplify right side
    72,558.13x = 4,077,166,911.76
  5. Step 5: Solve for x
    x = 4,077,166,911.76/72,558.13
  6. Step 6: Final answer
    x = 56,191.73

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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.