Home / 77,812.47-116,720.96-30,425.64

Finding the Fourth Proportional to 77,812.47, 116,720.96 and 30,425.64

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Solution

The fourth proportional to 77,812.47, 116,720.96 and 30,425.64 is: 45,639.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,812.47 : 116,720.96 = 30,425.64 : x
  2. Step 2: Convert to fraction form
    77,812.47/116,720.96 = 30,425.64/x
  3. Step 3: Cross multiply
    77,812.47x = 116,720.96 × 30,425.64
  4. Step 4: Simplify right side
    77,812.47x = 3,551,309,909.41
  5. Step 5: Solve for x
    x = 3,551,309,909.41/77,812.47
  6. Step 6: Final answer
    x = 45,639.34

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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.