Home / 72,036.16-99,408.96-40,212.88

Finding the Fourth Proportional to 72,036.16, 99,408.96 and 40,212.88

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Solution

The fourth proportional to 72,036.16, 99,408.96 and 40,212.88 is: 55,493.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,036.16 : 99,408.96 = 40,212.88 : x
  2. Step 2: Convert to fraction form
    72,036.16/99,408.96 = 40,212.88/x
  3. Step 3: Cross multiply
    72,036.16x = 99,408.96 × 40,212.88
  4. Step 4: Simplify right side
    72,036.16x = 3,997,520,579.40
  5. Step 5: Solve for x
    x = 3,997,520,579.40/72,036.16
  6. Step 6: Final answer
    x = 55,493.25

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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.