Home / 43,292.19-64,934.02-21,120.87

Finding the Fourth Proportional to 43,292.19, 64,934.02 and 21,120.87

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Solution

The fourth proportional to 43,292.19, 64,934.02 and 21,120.87 is: 31,679.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,292.19 : 64,934.02 = 21,120.87 : x
  2. Step 2: Convert to fraction form
    43,292.19/64,934.02 = 21,120.87/x
  3. Step 3: Cross multiply
    43,292.19x = 64,934.02 × 21,120.87
  4. Step 4: Simplify right side
    43,292.19x = 1,371,462,899.65
  5. Step 5: Solve for x
    x = 1,371,462,899.65/43,292.19
  6. Step 6: Final answer
    x = 31,679.22

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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.