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Finding the Fourth Proportional to 89,289.70, 133,934.55 and 69,583

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Solution

The fourth proportional to 89,289.70, 133,934.55 and 69,583 is: 104,374.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,289.70 : 133,934.55 = 69,583 : x
  2. Step 2: Convert to fraction form
    89,289.70/133,934.55 = 69,583/x
  3. Step 3: Cross multiply
    89,289.70x = 133,934.55 × 69,583
  4. Step 4: Simplify right side
    89,289.70x = 9,319,567,792.65
  5. Step 5: Solve for x
    x = 9,319,567,792.65/89,289.70
  6. Step 6: Final answer
    x = 104,374.50

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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.