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Finding the Fourth Proportional to 66,577.95, 99,883.85 and 19,831.23

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Solution

The fourth proportional to 66,577.95, 99,883.85 and 19,831.23 is: 29,751.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,577.95 : 99,883.85 = 19,831.23 : x
  2. Step 2: Convert to fraction form
    66,577.95/99,883.85 = 19,831.23/x
  3. Step 3: Cross multiply
    66,577.95x = 99,883.85 × 19,831.23
  4. Step 4: Simplify right side
    66,577.95x = 1,980,819,503.48
  5. Step 5: Solve for x
    x = 1,980,819,503.48/66,577.95
  6. Step 6: Final answer
    x = 29,751.88

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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.