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Finding the Fourth Proportional to 72,779.30, 100,411.41 and 59,327.43

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Solution

The fourth proportional to 72,779.30, 100,411.41 and 59,327.43 is: 81,852.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,779.30 : 100,411.41 = 59,327.43 : x
  2. Step 2: Convert to fraction form
    72,779.30/100,411.41 = 59,327.43/x
  3. Step 3: Cross multiply
    72,779.30x = 100,411.41 × 59,327.43
  4. Step 4: Simplify right side
    72,779.30x = 5,957,150,897.98
  5. Step 5: Solve for x
    x = 5,957,150,897.98/72,779.30
  6. Step 6: Final answer
    x = 81,852.27

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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.