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Finding the Fourth Proportional to 77,470.40, 106,910.61 and 45,656.84

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Solution

The fourth proportional to 77,470.40, 106,910.61 and 45,656.84 is: 63,007.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,470.40 : 106,910.61 = 45,656.84 : x
  2. Step 2: Convert to fraction form
    77,470.40/106,910.61 = 45,656.84/x
  3. Step 3: Cross multiply
    77,470.40x = 106,910.61 × 45,656.84
  4. Step 4: Simplify right side
    77,470.40x = 4,881,200,615.07
  5. Step 5: Solve for x
    x = 4,881,200,615.07/77,470.40
  6. Step 6: Final answer
    x = 63,007.30

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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.