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Finding the Fourth Proportional to 70,574.45, 105,818.72 and 30,000.15

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Solution

The fourth proportional to 70,574.45, 105,818.72 and 30,000.15 is: 44,981.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,574.45 : 105,818.72 = 30,000.15 : x
  2. Step 2: Convert to fraction form
    70,574.45/105,818.72 = 30,000.15/x
  3. Step 3: Cross multiply
    70,574.45x = 105,818.72 × 30,000.15
  4. Step 4: Simplify right side
    70,574.45x = 3,174,577,322.81
  5. Step 5: Solve for x
    x = 3,174,577,322.81/70,574.45
  6. Step 6: Final answer
    x = 44,981.97

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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.