Home / 66,139.88-99,275.16-34,581.20

Finding the Fourth Proportional to 66,139.88, 99,275.16 and 34,581.20

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Solution

The fourth proportional to 66,139.88, 99,275.16 and 34,581.20 is: 51,905.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,139.88 : 99,275.16 = 34,581.20 : x
  2. Step 2: Convert to fraction form
    66,139.88/99,275.16 = 34,581.20/x
  3. Step 3: Cross multiply
    66,139.88x = 99,275.16 × 34,581.20
  4. Step 4: Simplify right side
    66,139.88x = 3,433,054,162.99
  5. Step 5: Solve for x
    x = 3,433,054,162.99/66,139.88
  6. Step 6: Final answer
    x = 51,905.96

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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.