Home / 65,740.47-90,665.96-55,581.04

Finding the Fourth Proportional to 65,740.47, 90,665.96 and 55,581.04

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Solution

The fourth proportional to 65,740.47, 90,665.96 and 55,581.04 is: 76,654.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,740.47 : 90,665.96 = 55,581.04 : x
  2. Step 2: Convert to fraction form
    65,740.47/90,665.96 = 55,581.04/x
  3. Step 3: Cross multiply
    65,740.47x = 90,665.96 × 55,581.04
  4. Step 4: Simplify right side
    65,740.47x = 5,039,308,349.40
  5. Step 5: Solve for x
    x = 5,039,308,349.40/65,740.47
  6. Step 6: Final answer
    x = 76,654.58

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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.