Home / 66,205.28-91,384.20-42,332.06

Finding the Fourth Proportional to 66,205.28, 91,384.20 and 42,332.06

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Solution

The fourth proportional to 66,205.28, 91,384.20 and 42,332.06 is: 58,431.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,205.28 : 91,384.20 = 42,332.06 : x
  2. Step 2: Convert to fraction form
    66,205.28/91,384.20 = 42,332.06/x
  3. Step 3: Cross multiply
    66,205.28x = 91,384.20 × 42,332.06
  4. Step 4: Simplify right side
    66,205.28x = 3,868,480,980.53
  5. Step 5: Solve for x
    x = 3,868,480,980.53/66,205.28
  6. Step 6: Final answer
    x = 58,431.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.