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Finding the Fourth Proportional to 60,435.65, 90,653.36 and 20,993.10

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Solution

The fourth proportional to 60,435.65, 90,653.36 and 20,993.10 is: 31,489.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,435.65 : 90,653.36 = 20,993.10 : x
  2. Step 2: Convert to fraction form
    60,435.65/90,653.36 = 20,993.10/x
  3. Step 3: Cross multiply
    60,435.65x = 90,653.36 × 20,993.10
  4. Step 4: Simplify right side
    60,435.65x = 1,903,094,946.85
  5. Step 5: Solve for x
    x = 1,903,094,946.85/60,435.65
  6. Step 6: Final answer
    x = 31,489.61

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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.