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Finding the Fourth Proportional to 77,323.10, 115,751.22 and 69,931.04

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Solution

The fourth proportional to 77,323.10, 115,751.22 and 69,931.04 is: 104,685.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,323.10 : 115,751.22 = 69,931.04 : x
  2. Step 2: Convert to fraction form
    77,323.10/115,751.22 = 69,931.04/x
  3. Step 3: Cross multiply
    77,323.10x = 115,751.22 × 69,931.04
  4. Step 4: Simplify right side
    77,323.10x = 8,094,603,195.87
  5. Step 5: Solve for x
    x = 8,094,603,195.87/77,323.10
  6. Step 6: Final answer
    x = 104,685.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.