Home / 85,828.19-128,747.95-29,673.72

Finding the Fourth Proportional to 85,828.19, 128,747.95 and 29,673.72

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Solution

The fourth proportional to 85,828.19, 128,747.95 and 29,673.72 is: 44,512.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,828.19 : 128,747.95 = 29,673.72 : x
  2. Step 2: Convert to fraction form
    85,828.19/128,747.95 = 29,673.72/x
  3. Step 3: Cross multiply
    85,828.19x = 128,747.95 × 29,673.72
  4. Step 4: Simplify right side
    85,828.19x = 3,820,430,544.69
  5. Step 5: Solve for x
    x = 3,820,430,544.69/85,828.19
  6. Step 6: Final answer
    x = 44,512.54

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1.5x scale

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.