Home / 66,146.81-99,228.63-21,777.98

Finding the Fourth Proportional to 66,146.81, 99,228.63 and 21,777.98

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Solution

The fourth proportional to 66,146.81, 99,228.63 and 21,777.98 is: 32,669.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,146.81 : 99,228.63 = 21,777.98 : x
  2. Step 2: Convert to fraction form
    66,146.81/99,228.63 = 21,777.98/x
  3. Step 3: Cross multiply
    66,146.81x = 99,228.63 × 21,777.98
  4. Step 4: Simplify right side
    66,146.81x = 2,160,999,119.57
  5. Step 5: Solve for x
    x = 2,160,999,119.57/66,146.81
  6. Step 6: Final answer
    x = 32,669.74

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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.