Home / 91,320.48-125,788.06-64,415.84

Finding the Fourth Proportional to 91,320.48, 125,788.06 and 64,415.84

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Solution

The fourth proportional to 91,320.48, 125,788.06 and 64,415.84 is: 88,728.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,320.48 : 125,788.06 = 64,415.84 : x
  2. Step 2: Convert to fraction form
    91,320.48/125,788.06 = 64,415.84/x
  3. Step 3: Cross multiply
    91,320.48x = 125,788.06 × 64,415.84
  4. Step 4: Simplify right side
    91,320.48x = 8,102,743,546.87
  5. Step 5: Solve for x
    x = 8,102,743,546.87/91,320.48
  6. Step 6: Final answer
    x = 88,728.66

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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.