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Finding the Fourth Proportional to 77,147.47, 106,454.41 and 43,157.71

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Solution

The fourth proportional to 77,147.47, 106,454.41 and 43,157.71 is: 59,552.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,147.47 : 106,454.41 = 43,157.71 : x
  2. Step 2: Convert to fraction form
    77,147.47/106,454.41 = 43,157.71/x
  3. Step 3: Cross multiply
    77,147.47x = 106,454.41 × 43,157.71
  4. Step 4: Simplify right side
    77,147.47x = 4,594,328,555.00
  5. Step 5: Solve for x
    x = 4,594,328,555.00/77,147.47
  6. Step 6: Final answer
    x = 59,552.55

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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.