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Finding the Fourth Proportional to 59,405.80, 89,000.70 and 47,007.40

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Solution

The fourth proportional to 59,405.80, 89,000.70 and 47,007.40 is: 70,425.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,405.80 : 89,000.70 = 47,007.40 : x
  2. Step 2: Convert to fraction form
    59,405.80/89,000.70 = 47,007.40/x
  3. Step 3: Cross multiply
    59,405.80x = 89,000.70 × 47,007.40
  4. Step 4: Simplify right side
    59,405.80x = 4,183,691,505.18
  5. Step 5: Solve for x
    x = 4,183,691,505.18/59,405.80
  6. Step 6: Final answer
    x = 70,425.64

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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.