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Finding the Fourth Proportional to 81,470.94, 112,427.88 and 47,477.22

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Solution

The fourth proportional to 81,470.94, 112,427.88 and 47,477.22 is: 65,517.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,470.94 : 112,427.88 = 47,477.22 : x
  2. Step 2: Convert to fraction form
    81,470.94/112,427.88 = 47,477.22/x
  3. Step 3: Cross multiply
    81,470.94x = 112,427.88 × 47,477.22
  4. Step 4: Simplify right side
    81,470.94x = 5,337,763,192.89
  5. Step 5: Solve for x
    x = 5,337,763,192.89/81,470.94
  6. Step 6: Final answer
    x = 65,517.39

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1.5x scale

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.