Home / 74,270.75-102,491.70-42,439.65

Finding the Fourth Proportional to 74,270.75, 102,491.70 and 42,439.65

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Solution

The fourth proportional to 74,270.75, 102,491.70 and 42,439.65 is: 58,565.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,270.75 : 102,491.70 = 42,439.65 : x
  2. Step 2: Convert to fraction form
    74,270.75/102,491.70 = 42,439.65/x
  3. Step 3: Cross multiply
    74,270.75x = 102,491.70 × 42,439.65
  4. Step 4: Simplify right side
    74,270.75x = 4,349,711,690.50
  5. Step 5: Solve for x
    x = 4,349,711,690.50/74,270.75
  6. Step 6: Final answer
    x = 58,565.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.