Home / 72,740.63-100,373.91-40,908.85

Finding the Fourth Proportional to 72,740.63, 100,373.91 and 40,908.85

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Solution

The fourth proportional to 72,740.63, 100,373.91 and 40,908.85 is: 56,449.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,740.63 : 100,373.91 = 40,908.85 : x
  2. Step 2: Convert to fraction form
    72,740.63/100,373.91 = 40,908.85/x
  3. Step 3: Cross multiply
    72,740.63x = 100,373.91 × 40,908.85
  4. Step 4: Simplify right side
    72,740.63x = 4,106,181,228.10
  5. Step 5: Solve for x
    x = 4,106,181,228.10/72,740.63
  6. Step 6: Final answer
    x = 56,449.62

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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.