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Finding the Fourth Proportional to 77,763.40, 107,312.34 and 43,769.32

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Solution

The fourth proportional to 77,763.40, 107,312.34 and 43,769.32 is: 60,401.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,763.40 : 107,312.34 = 43,769.32 : x
  2. Step 2: Convert to fraction form
    77,763.40/107,312.34 = 43,769.32/x
  3. Step 3: Cross multiply
    77,763.40x = 107,312.34 × 43,769.32
  4. Step 4: Simplify right side
    77,763.40x = 4,696,988,149.41
  5. Step 5: Solve for x
    x = 4,696,988,149.41/77,763.40
  6. Step 6: Final answer
    x = 60,401.01

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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.