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Finding the Fourth Proportional to 65,315.88, 90,226.90 and 62,888.36

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Solution

The fourth proportional to 65,315.88, 90,226.90 and 62,888.36 is: 86,873.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,315.88 : 90,226.90 = 62,888.36 : x
  2. Step 2: Convert to fraction form
    65,315.88/90,226.90 = 62,888.36/x
  3. Step 3: Cross multiply
    65,315.88x = 90,226.90 × 62,888.36
  4. Step 4: Simplify right side
    65,315.88x = 5,674,221,768.88
  5. Step 5: Solve for x
    x = 5,674,221,768.88/65,315.88
  6. Step 6: Final answer
    x = 86,873.54

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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.