Home / 66,278.66-99,369.48-21,274.35

Finding the Fourth Proportional to 66,278.66, 99,369.48 and 21,274.35

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Solution

The fourth proportional to 66,278.66, 99,369.48 and 21,274.35 is: 31,895.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,278.66 : 99,369.48 = 21,274.35 : x
  2. Step 2: Convert to fraction form
    66,278.66/99,369.48 = 21,274.35/x
  3. Step 3: Cross multiply
    66,278.66x = 99,369.48 × 21,274.35
  4. Step 4: Simplify right side
    66,278.66x = 2,114,020,803.98
  5. Step 5: Solve for x
    x = 2,114,020,803.98/66,278.66
  6. Step 6: Final answer
    x = 31,895.95

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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.