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Finding the Fourth Proportional to 43,239, 64,859.04 and 15,537

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Solution

The fourth proportional to 43,239, 64,859.04 and 15,537 is: 23,305.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,239 : 64,859.04 = 15,537 : x
  2. Step 2: Convert to fraction form
    43,239/64,859.04 = 15,537/x
  3. Step 3: Cross multiply
    43,239x = 64,859.04 × 15,537
  4. Step 4: Simplify right side
    43,239x = 1,007,714,904.48
  5. Step 5: Solve for x
    x = 1,007,714,904.48/43,239
  6. Step 6: Final answer
    x = 23,305.69

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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.