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Finding the Fourth Proportional to 43,587.25, 65,390.60 and 15,885.25

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Solution

The fourth proportional to 43,587.25, 65,390.60 and 15,885.25 is: 23,831.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,587.25 : 65,390.60 = 15,885.25 : x
  2. Step 2: Convert to fraction form
    43,587.25/65,390.60 = 15,885.25/x
  3. Step 3: Cross multiply
    43,587.25x = 65,390.60 × 15,885.25
  4. Step 4: Simplify right side
    43,587.25x = 1,038,746,028.65
  5. Step 5: Solve for x
    x = 1,038,746,028.65/43,587.25
  6. Step 6: Final answer
    x = 23,831.42

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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.