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Finding the Fourth Proportional to 59,990.40, 89,977.68 and 15,620.40

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Solution

The fourth proportional to 59,990.40, 89,977.68 and 15,620.40 is: 23,428.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,990.40 : 89,977.68 = 15,620.40 : x
  2. Step 2: Convert to fraction form
    59,990.40/89,977.68 = 15,620.40/x
  3. Step 3: Cross multiply
    59,990.40x = 89,977.68 × 15,620.40
  4. Step 4: Simplify right side
    59,990.40x = 1,405,487,352.67
  5. Step 5: Solve for x
    x = 1,405,487,352.67/59,990.40
  6. Step 6: Final answer
    x = 23,428.54

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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.