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Finding the Fourth Proportional to 77,873.45, 107,473.77 and 47,679.08

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Solution

The fourth proportional to 77,873.45, 107,473.77 and 47,679.08 is: 65,802.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,873.45 : 107,473.77 = 47,679.08 : x
  2. Step 2: Convert to fraction form
    77,873.45/107,473.77 = 47,679.08/x
  3. Step 3: Cross multiply
    77,873.45x = 107,473.77 × 47,679.08
  4. Step 4: Simplify right side
    77,873.45x = 5,124,249,940.36
  5. Step 5: Solve for x
    x = 5,124,249,940.36/77,873.45
  6. Step 6: Final answer
    x = 65,802.28

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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.