Home / 85,724.36-128,592.71-29,563.67

Finding the Fourth Proportional to 85,724.36, 128,592.71 and 29,563.67

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Solution

The fourth proportional to 85,724.36, 128,592.71 and 29,563.67 is: 44,347.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,724.36 : 128,592.71 = 29,563.67 : x
  2. Step 2: Convert to fraction form
    85,724.36/128,592.71 = 29,563.67/x
  3. Step 3: Cross multiply
    85,724.36x = 128,592.71 × 29,563.67
  4. Step 4: Simplify right side
    85,724.36x = 3,801,671,652.06
  5. Step 5: Solve for x
    x = 3,801,671,652.06/85,724.36
  6. Step 6: Final answer
    x = 44,347.63

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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.