Home / 115,783.51-159,784.11-64,795.83

Finding the Fourth Proportional to 115,783.51, 159,784.11 and 64,795.83

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Solution

The fourth proportional to 115,783.51, 159,784.11 and 64,795.83 is: 89,419.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,783.51 : 159,784.11 = 64,795.83 : x
  2. Step 2: Convert to fraction form
    115,783.51/159,784.11 = 64,795.83/x
  3. Step 3: Cross multiply
    115,783.51x = 159,784.11 × 64,795.83
  4. Step 4: Simplify right side
    115,783.51x = 10,353,344,028.26
  5. Step 5: Solve for x
    x = 10,353,344,028.26/115,783.51
  6. Step 6: Final answer
    x = 89,419.85

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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.