Home / 43,722.40-65,547.60-18,781.60

Finding the Fourth Proportional to 43,722.40, 65,547.60 and 18,781.60

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Solution

The fourth proportional to 43,722.40, 65,547.60 and 18,781.60 is: 28,156.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,722.40 : 65,547.60 = 18,781.60 : x
  2. Step 2: Convert to fraction form
    43,722.40/65,547.60 = 18,781.60/x
  3. Step 3: Cross multiply
    43,722.40x = 65,547.60 × 18,781.60
  4. Step 4: Simplify right side
    43,722.40x = 1,231,088,804.16
  5. Step 5: Solve for x
    x = 1,231,088,804.16/43,722.40
  6. Step 6: Final answer
    x = 28,156.94

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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.