Home / 51,470.12-77,242.10-21,908.72

Finding the Fourth Proportional to 51,470.12, 77,242.10 and 21,908.72

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Solution

The fourth proportional to 51,470.12, 77,242.10 and 21,908.72 is: 32,878.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,470.12 : 77,242.10 = 21,908.72 : x
  2. Step 2: Convert to fraction form
    51,470.12/77,242.10 = 21,908.72/x
  3. Step 3: Cross multiply
    51,470.12x = 77,242.10 × 21,908.72
  4. Step 4: Simplify right side
    51,470.12x = 1,692,275,541.11
  5. Step 5: Solve for x
    x = 1,692,275,541.11/51,470.12
  6. Step 6: Final answer
    x = 32,878.80

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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.