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Finding the Fourth Proportional to 65,700.94, 98,566.90 and 21,324.28

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Solution

The fourth proportional to 65,700.94, 98,566.90 and 21,324.28 is: 31,991.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,700.94 : 98,566.90 = 21,324.28 : x
  2. Step 2: Convert to fraction form
    65,700.94/98,566.90 = 21,324.28/x
  3. Step 3: Cross multiply
    65,700.94x = 98,566.90 × 21,324.28
  4. Step 4: Simplify right side
    65,700.94x = 2,101,868,174.33
  5. Step 5: Solve for x
    x = 2,101,868,174.33/65,700.94
  6. Step 6: Final answer
    x = 31,991.45

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1.5x scale

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.