Home / 72,669.55-100,285.15-39,965.26

Finding the Fourth Proportional to 72,669.55, 100,285.15 and 39,965.26

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Solution

The fourth proportional to 72,669.55, 100,285.15 and 39,965.26 is: 55,152.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,669.55 : 100,285.15 = 39,965.26 : x
  2. Step 2: Convert to fraction form
    72,669.55/100,285.15 = 39,965.26/x
  3. Step 3: Cross multiply
    72,669.55x = 100,285.15 × 39,965.26
  4. Step 4: Simplify right side
    72,669.55x = 4,007,922,093.89
  5. Step 5: Solve for x
    x = 4,007,922,093.89/72,669.55
  6. Step 6: Final answer
    x = 55,152.70

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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.