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Finding the Fourth Proportional to 73,941.68, 102,087.20 and 65,970.06

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Solution

The fourth proportional to 73,941.68, 102,087.20 and 65,970.06 is: 91,081.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,941.68 : 102,087.20 = 65,970.06 : x
  2. Step 2: Convert to fraction form
    73,941.68/102,087.20 = 65,970.06/x
  3. Step 3: Cross multiply
    73,941.68x = 102,087.20 × 65,970.06
  4. Step 4: Simplify right side
    73,941.68x = 6,734,698,709.23
  5. Step 5: Solve for x
    x = 6,734,698,709.23/73,941.68
  6. Step 6: Final answer
    x = 91,081.22

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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.