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Finding the Fourth Proportional to 34,454.40, 51,643.20 and 19,670.40

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Solution

The fourth proportional to 34,454.40, 51,643.20 and 19,670.40 is: 29,483.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,454.40 : 51,643.20 = 19,670.40 : x
  2. Step 2: Convert to fraction form
    34,454.40/51,643.20 = 19,670.40/x
  3. Step 3: Cross multiply
    34,454.40x = 51,643.20 × 19,670.40
  4. Step 4: Simplify right side
    34,454.40x = 1,015,842,401.28
  5. Step 5: Solve for x
    x = 1,015,842,401.28/34,454.40
  6. Step 6: Final answer
    x = 29,483.68

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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.