Home / 65,438.20-98,136.50-21,054.62

Finding the Fourth Proportional to 65,438.20, 98,136.50 and 21,054.62

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Solution

The fourth proportional to 65,438.20, 98,136.50 and 21,054.62 is: 31,575.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,438.20 : 98,136.50 = 21,054.62 : x
  2. Step 2: Convert to fraction form
    65,438.20/98,136.50 = 21,054.62/x
  3. Step 3: Cross multiply
    65,438.20x = 98,136.50 × 21,054.62
  4. Step 4: Simplify right side
    65,438.20x = 2,066,226,715.63
  5. Step 5: Solve for x
    x = 2,066,226,715.63/65,438.20
  6. Step 6: Final answer
    x = 31,575.24

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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.