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Finding the Fourth Proportional to 76,145.58, 105,090.69 and 45,947.20

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Solution

The fourth proportional to 76,145.58, 105,090.69 and 45,947.20 is: 63,413.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,145.58 : 105,090.69 = 45,947.20 : x
  2. Step 2: Convert to fraction form
    76,145.58/105,090.69 = 45,947.20/x
  3. Step 3: Cross multiply
    76,145.58x = 105,090.69 × 45,947.20
  4. Step 4: Simplify right side
    76,145.58x = 4,828,622,951.57
  5. Step 5: Solve for x
    x = 4,828,622,951.57/76,145.58
  6. Step 6: Final answer
    x = 63,413.04

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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.