Home / 81,582.59-122,259.04-64,868.45

Finding the Fourth Proportional to 81,582.59, 122,259.04 and 64,868.45

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Solution

The fourth proportional to 81,582.59, 122,259.04 and 64,868.45 is: 97,211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,582.59 : 122,259.04 = 64,868.45 : x
  2. Step 2: Convert to fraction form
    81,582.59/122,259.04 = 64,868.45/x
  3. Step 3: Cross multiply
    81,582.59x = 122,259.04 × 64,868.45
  4. Step 4: Simplify right side
    81,582.59x = 7,930,753,649.82
  5. Step 5: Solve for x
    x = 7,930,753,649.82/81,582.59
  6. Step 6: Final answer
    x = 97,211.35

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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.