Home / 81,408.42-112,253.18-51,157.35

Finding the Fourth Proportional to 81,408.42, 112,253.18 and 51,157.35

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Solution

The fourth proportional to 81,408.42, 112,253.18 and 51,157.35 is: 70,540.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,408.42 : 112,253.18 = 51,157.35 : x
  2. Step 2: Convert to fraction form
    81,408.42/112,253.18 = 51,157.35/x
  3. Step 3: Cross multiply
    81,408.42x = 112,253.18 × 51,157.35
  4. Step 4: Simplify right side
    81,408.42x = 5,742,574,962.09
  5. Step 5: Solve for x
    x = 5,742,574,962.09/81,408.42
  6. Step 6: Final answer
    x = 70,540.31

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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.