Home / 92,977.16-128,309.31-50,535.78

Finding the Fourth Proportional to 92,977.16, 128,309.31 and 50,535.78

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Solution

The fourth proportional to 92,977.16, 128,309.31 and 50,535.78 is: 69,739.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,977.16 : 128,309.31 = 50,535.78 : x
  2. Step 2: Convert to fraction form
    92,977.16/128,309.31 = 50,535.78/x
  3. Step 3: Cross multiply
    92,977.16x = 128,309.31 × 50,535.78
  4. Step 4: Simplify right side
    92,977.16x = 6,484,211,062.11
  5. Step 5: Solve for x
    x = 6,484,211,062.11/92,977.16
  6. Step 6: Final answer
    x = 69,739.83

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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.