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Finding the Fourth Proportional to 59,988.72, 89,973.83 and 20,008.40

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Solution

The fourth proportional to 59,988.72, 89,973.83 and 20,008.40 is: 30,009.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,988.72 : 89,973.83 = 20,008.40 : x
  2. Step 2: Convert to fraction form
    59,988.72/89,973.83 = 20,008.40/x
  3. Step 3: Cross multiply
    59,988.72x = 89,973.83 × 20,008.40
  4. Step 4: Simplify right side
    59,988.72x = 1,800,232,380.17
  5. Step 5: Solve for x
    x = 1,800,232,380.17/59,988.72
  6. Step 6: Final answer
    x = 30,009.51

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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.