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Finding the Fourth Proportional to 72,714.40, 109,065.84 and 25,962.40

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Solution

The fourth proportional to 72,714.40, 109,065.84 and 25,962.40 is: 38,941.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,714.40 : 109,065.84 = 25,962.40 : x
  2. Step 2: Convert to fraction form
    72,714.40/109,065.84 = 25,962.40/x
  3. Step 3: Cross multiply
    72,714.40x = 109,065.84 × 25,962.40
  4. Step 4: Simplify right side
    72,714.40x = 2,831,610,964.42
  5. Step 5: Solve for x
    x = 2,831,610,964.42/72,714.40
  6. Step 6: Final answer
    x = 38,941.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.