Home / 72,555.12-100,126.32-42,361.20

Finding the Fourth Proportional to 72,555.12, 100,126.32 and 42,361.20

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Solution

The fourth proportional to 72,555.12, 100,126.32 and 42,361.20 is: 58,458.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,555.12 : 100,126.32 = 42,361.20 : x
  2. Step 2: Convert to fraction form
    72,555.12/100,126.32 = 42,361.20/x
  3. Step 3: Cross multiply
    72,555.12x = 100,126.32 × 42,361.20
  4. Step 4: Simplify right side
    72,555.12x = 4,241,471,066.78
  5. Step 5: Solve for x
    x = 4,241,471,066.78/72,555.12
  6. Step 6: Final answer
    x = 58,458.60

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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.