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Finding the Fourth Proportional to 72,443.63, 100,004.94 and 45,625.54

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Solution

The fourth proportional to 72,443.63, 100,004.94 and 45,625.54 is: 62,983.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,443.63 : 100,004.94 = 45,625.54 : x
  2. Step 2: Convert to fraction form
    72,443.63/100,004.94 = 45,625.54/x
  3. Step 3: Cross multiply
    72,443.63x = 100,004.94 × 45,625.54
  4. Step 4: Simplify right side
    72,443.63x = 4,562,779,390.17
  5. Step 5: Solve for x
    x = 4,562,779,390.17/72,443.63
  6. Step 6: Final answer
    x = 62,983.86

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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.