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Finding the Fourth Proportional to 45,839.40, 68,802.30 and 28,343.40

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Solution

The fourth proportional to 45,839.40, 68,802.30 and 28,343.40 is: 42,541.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,839.40 : 68,802.30 = 28,343.40 : x
  2. Step 2: Convert to fraction form
    45,839.40/68,802.30 = 28,343.40/x
  3. Step 3: Cross multiply
    45,839.40x = 68,802.30 × 28,343.40
  4. Step 4: Simplify right side
    45,839.40x = 1,950,091,109.82
  5. Step 5: Solve for x
    x = 1,950,091,109.82/45,839.40
  6. Step 6: Final answer
    x = 42,541.81

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1.5x scale

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.