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Finding the Fourth Proportional to 53,157.78, 79,746.45 and 21,995.46

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Solution

The fourth proportional to 53,157.78, 79,746.45 and 21,995.46 is: 32,997.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,157.78 : 79,746.45 = 21,995.46 : x
  2. Step 2: Convert to fraction form
    53,157.78/79,746.45 = 21,995.46/x
  3. Step 3: Cross multiply
    53,157.78x = 79,746.45 × 21,995.46
  4. Step 4: Simplify right side
    53,157.78x = 1,754,059,851.12
  5. Step 5: Solve for x
    x = 1,754,059,851.12/53,157.78
  6. Step 6: Final answer
    x = 32,997.24

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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.