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Finding the Fourth Proportional to 70,313.40, 105,416.10 and 35,278.20

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Solution

The fourth proportional to 70,313.40, 105,416.10 and 35,278.20 is: 52,890.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,313.40 : 105,416.10 = 35,278.20 : x
  2. Step 2: Convert to fraction form
    70,313.40/105,416.10 = 35,278.20/x
  3. Step 3: Cross multiply
    70,313.40x = 105,416.10 × 35,278.20
  4. Step 4: Simplify right side
    70,313.40x = 3,718,890,259.02
  5. Step 5: Solve for x
    x = 3,718,890,259.02/70,313.40
  6. Step 6: Final answer
    x = 52,890.21

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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.