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Finding the Fourth Proportional to 35,499.40, 53,146.70 and 21,675.40

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Solution

The fourth proportional to 35,499.40, 53,146.70 and 21,675.40 is: 32,450.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,499.40 : 53,146.70 = 21,675.40 : x
  2. Step 2: Convert to fraction form
    35,499.40/53,146.70 = 21,675.40/x
  3. Step 3: Cross multiply
    35,499.40x = 53,146.70 × 21,675.40
  4. Step 4: Simplify right side
    35,499.40x = 1,151,975,981.18
  5. Step 5: Solve for x
    x = 1,151,975,981.18/35,499.40
  6. Step 6: Final answer
    x = 32,450.58

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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.