Home / 97,785.15-134,920.38-55,343.68

Finding the Fourth Proportional to 97,785.15, 134,920.38 and 55,343.68

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Solution

The fourth proportional to 97,785.15, 134,920.38 and 55,343.68 is: 76,361.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,785.15 : 134,920.38 = 55,343.68 : x
  2. Step 2: Convert to fraction form
    97,785.15/134,920.38 = 55,343.68/x
  3. Step 3: Cross multiply
    97,785.15x = 134,920.38 × 55,343.68
  4. Step 4: Simplify right side
    97,785.15x = 7,466,989,384.88
  5. Step 5: Solve for x
    x = 7,466,989,384.88/97,785.15
  6. Step 6: Final answer
    x = 76,361.18

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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.