Home / 69,985.89-96,580.53-38,154.78

Finding the Fourth Proportional to 69,985.89, 96,580.53 and 38,154.78

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Solution

The fourth proportional to 69,985.89, 96,580.53 and 38,154.78 is: 52,653.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,985.89 : 96,580.53 = 38,154.78 : x
  2. Step 2: Convert to fraction form
    69,985.89/96,580.53 = 38,154.78/x
  3. Step 3: Cross multiply
    69,985.89x = 96,580.53 × 38,154.78
  4. Step 4: Simplify right side
    69,985.89x = 3,685,008,874.43
  5. Step 5: Solve for x
    x = 3,685,008,874.43/69,985.89
  6. Step 6: Final answer
    x = 52,653.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.