Home / 115,828.70-159,834.77-64,829.75

Finding the Fourth Proportional to 115,828.70, 159,834.77 and 64,829.75

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Solution

The fourth proportional to 115,828.70, 159,834.77 and 64,829.75 is: 89,460.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,828.70 : 159,834.77 = 64,829.75 : x
  2. Step 2: Convert to fraction form
    115,828.70/159,834.77 = 64,829.75/x
  3. Step 3: Cross multiply
    115,828.70x = 159,834.77 × 64,829.75
  4. Step 4: Simplify right side
    115,828.70x = 10,362,047,300.20
  5. Step 5: Solve for x
    x = 10,362,047,300.20/115,828.70
  6. Step 6: Final answer
    x = 89,460.11

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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.