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Finding the Fourth Proportional to 70,199.79, 105,284.16 and 20,269.02

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Solution

The fourth proportional to 70,199.79, 105,284.16 and 20,269.02 is: 30,399.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,199.79 : 105,284.16 = 20,269.02 : x
  2. Step 2: Convert to fraction form
    70,199.79/105,284.16 = 20,269.02/x
  3. Step 3: Cross multiply
    70,199.79x = 105,284.16 × 20,269.02
  4. Step 4: Simplify right side
    70,199.79x = 2,134,006,744.72
  5. Step 5: Solve for x
    x = 2,134,006,744.72/70,199.79
  6. Step 6: Final answer
    x = 30,399.05

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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.