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Finding the Fourth Proportional to 59,990.90, 89,997.28 and 30,020.81

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Solution

The fourth proportional to 59,990.90, 89,997.28 and 30,020.81 is: 45,036.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,990.90 : 89,997.28 = 30,020.81 : x
  2. Step 2: Convert to fraction form
    59,990.90/89,997.28 = 30,020.81/x
  3. Step 3: Cross multiply
    59,990.90x = 89,997.28 × 30,020.81
  4. Step 4: Simplify right side
    59,990.90x = 2,701,791,243.40
  5. Step 5: Solve for x
    x = 2,701,791,243.40/59,990.90
  6. Step 6: Final answer
    x = 45,036.68

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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.