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Finding the Fourth Proportional to 70,466.36, 105,699.72 and 17,880.08

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Solution

The fourth proportional to 70,466.36, 105,699.72 and 17,880.08 is: 26,820.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,466.36 : 105,699.72 = 17,880.08 : x
  2. Step 2: Convert to fraction form
    70,466.36/105,699.72 = 17,880.08/x
  3. Step 3: Cross multiply
    70,466.36x = 105,699.72 × 17,880.08
  4. Step 4: Simplify right side
    70,466.36x = 1,889,919,449.58
  5. Step 5: Solve for x
    x = 1,889,919,449.58/70,466.36
  6. Step 6: Final answer
    x = 26,820.17

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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.