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Finding the Fourth Proportional to 70,607.70, 105,911.50 and 18,017.19

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Solution

The fourth proportional to 70,607.70, 105,911.50 and 18,017.19 is: 27,025.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,607.70 : 105,911.50 = 18,017.19 : x
  2. Step 2: Convert to fraction form
    70,607.70/105,911.50 = 18,017.19/x
  3. Step 3: Cross multiply
    70,607.70x = 105,911.50 × 18,017.19
  4. Step 4: Simplify right side
    70,607.70x = 1,908,227,573.64
  5. Step 5: Solve for x
    x = 1,908,227,573.64/70,607.70
  6. Step 6: Final answer
    x = 27,025.77

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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.