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Finding the Fourth Proportional to 51,347.36, 77,020.21 and 19,764.28

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Solution

The fourth proportional to 51,347.36, 77,020.21 and 19,764.28 is: 29,646.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,347.36 : 77,020.21 = 19,764.28 : x
  2. Step 2: Convert to fraction form
    51,347.36/77,020.21 = 19,764.28/x
  3. Step 3: Cross multiply
    51,347.36x = 77,020.21 × 19,764.28
  4. Step 4: Simplify right side
    51,347.36x = 1,522,248,996.10
  5. Step 5: Solve for x
    x = 1,522,248,996.10/51,347.36
  6. Step 6: Final answer
    x = 29,646.10

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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.