Home / 77,435.64-116,139.60-20,509.93

Finding the Fourth Proportional to 77,435.64, 116,139.60 and 20,509.93

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Solution

The fourth proportional to 77,435.64, 116,139.60 and 20,509.93 is: 30,761.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,435.64 : 116,139.60 = 20,509.93 : x
  2. Step 2: Convert to fraction form
    77,435.64/116,139.60 = 20,509.93/x
  3. Step 3: Cross multiply
    77,435.64x = 116,139.60 × 20,509.93
  4. Step 4: Simplify right side
    77,435.64x = 2,382,015,066.23
  5. Step 5: Solve for x
    x = 2,382,015,066.23/77,435.64
  6. Step 6: Final answer
    x = 30,761.22

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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.