Home / 72,742.41-100,383.57-40,911.30

Finding the Fourth Proportional to 72,742.41, 100,383.57 and 40,911.30

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Solution

The fourth proportional to 72,742.41, 100,383.57 and 40,911.30 is: 56,457.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,742.41 : 100,383.57 = 40,911.30 : x
  2. Step 2: Convert to fraction form
    72,742.41/100,383.57 = 40,911.30/x
  3. Step 3: Cross multiply
    72,742.41x = 100,383.57 × 40,911.30
  4. Step 4: Simplify right side
    72,742.41x = 4,106,822,347.34
  5. Step 5: Solve for x
    x = 4,106,822,347.34/72,742.41
  6. Step 6: Final answer
    x = 56,457.06

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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.