Home / 85,749.86-128,639.25-29,574.94

Finding the Fourth Proportional to 85,749.86, 128,639.25 and 29,574.94

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Solution

The fourth proportional to 85,749.86, 128,639.25 and 29,574.94 is: 44,367.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,749.86 : 128,639.25 = 29,574.94 : x
  2. Step 2: Convert to fraction form
    85,749.86/128,639.25 = 29,574.94/x
  3. Step 3: Cross multiply
    85,749.86x = 128,639.25 × 29,574.94
  4. Step 4: Simplify right side
    85,749.86x = 3,804,497,704.86
  5. Step 5: Solve for x
    x = 3,804,497,704.86/85,749.86
  6. Step 6: Final answer
    x = 44,367.40

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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.