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Finding the Fourth Proportional to 64,009.80, 95,820.30 and 57,011.40

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Solution

The fourth proportional to 64,009.80, 95,820.30 and 57,011.40 is: 85,343.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,009.80 : 95,820.30 = 57,011.40 : x
  2. Step 2: Convert to fraction form
    64,009.80/95,820.30 = 57,011.40/x
  3. Step 3: Cross multiply
    64,009.80x = 95,820.30 × 57,011.40
  4. Step 4: Simplify right side
    64,009.80x = 5,462,849,451.42
  5. Step 5: Solve for x
    x = 5,462,849,451.42/64,009.80
  6. Step 6: Final answer
    x = 85,343.95

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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.