Home / 77,461.53-116,178.31-20,535.81

Finding the Fourth Proportional to 77,461.53, 116,178.31 and 20,535.81

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Solution

The fourth proportional to 77,461.53, 116,178.31 and 20,535.81 is: 30,800.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,461.53 : 116,178.31 = 20,535.81 : x
  2. Step 2: Convert to fraction form
    77,461.53/116,178.31 = 20,535.81/x
  3. Step 3: Cross multiply
    77,461.53x = 116,178.31 × 20,535.81
  4. Step 4: Simplify right side
    77,461.53x = 2,385,815,700.28
  5. Step 5: Solve for x
    x = 2,385,815,700.28/77,461.53
  6. Step 6: Final answer
    x = 30,800.01

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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.