Home / 70,342.02-105,523.43-20,415.65

Finding the Fourth Proportional to 70,342.02, 105,523.43 and 20,415.65

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Solution

The fourth proportional to 70,342.02, 105,523.43 and 20,415.65 is: 30,626.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,342.02 : 105,523.43 = 20,415.65 : x
  2. Step 2: Convert to fraction form
    70,342.02/105,523.43 = 20,415.65/x
  3. Step 3: Cross multiply
    70,342.02x = 105,523.43 × 20,415.65
  4. Step 4: Simplify right side
    70,342.02x = 2,154,328,783.98
  5. Step 5: Solve for x
    x = 2,154,328,783.98/70,342.02
  6. Step 6: Final answer
    x = 30,626.48

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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.