Home / 72,579.46-100,154.10-40,742.32

Finding the Fourth Proportional to 72,579.46, 100,154.10 and 40,742.32

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Solution

The fourth proportional to 72,579.46, 100,154.10 and 40,742.32 is: 56,221.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579.46 : 100,154.10 = 40,742.32 : x
  2. Step 2: Convert to fraction form
    72,579.46/100,154.10 = 40,742.32/x
  3. Step 3: Cross multiply
    72,579.46x = 100,154.10 × 40,742.32
  4. Step 4: Simplify right side
    72,579.46x = 4,080,510,391.51
  5. Step 5: Solve for x
    x = 4,080,510,391.51/72,579.46
  6. Step 6: Final answer
    x = 56,221.28

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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.