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Finding the Fourth Proportional to 43,681.60, 65,486.66 and 15,585.74

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Solution

The fourth proportional to 43,681.60, 65,486.66 and 15,585.74 is: 23,365.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,681.60 : 65,486.66 = 15,585.74 : x
  2. Step 2: Convert to fraction form
    43,681.60/65,486.66 = 15,585.74/x
  3. Step 3: Cross multiply
    43,681.60x = 65,486.66 × 15,585.74
  4. Step 4: Simplify right side
    43,681.60x = 1,020,658,056.23
  5. Step 5: Solve for x
    x = 1,020,658,056.23/43,681.60
  6. Step 6: Final answer
    x = 23,365.86

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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.