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Finding the Fourth Proportional to 64,820, 97,230 and 21,044

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Solution

The fourth proportional to 64,820, 97,230 and 21,044 is: 31,566

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,820 : 97,230 = 21,044 : x
  2. Step 2: Convert to fraction form
    64,820/97,230 = 21,044/x
  3. Step 3: Cross multiply
    64,820x = 97,230 × 21,044
  4. Step 4: Simplify right side
    64,820x = 2,046,108,120
  5. Step 5: Solve for x
    x = 2,046,108,120/64,820
  6. Step 6: Final answer
    x = 31,566

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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.