Home / 72,050.85-99,426.05-40,221.77

Finding the Fourth Proportional to 72,050.85, 99,426.05 and 40,221.77

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Solution

The fourth proportional to 72,050.85, 99,426.05 and 40,221.77 is: 55,503.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,050.85 : 99,426.05 = 40,221.77 : x
  2. Step 2: Convert to fraction form
    72,050.85/99,426.05 = 40,221.77/x
  3. Step 3: Cross multiply
    72,050.85x = 99,426.05 × 40,221.77
  4. Step 4: Simplify right side
    72,050.85x = 3,999,091,167.70
  5. Step 5: Solve for x
    x = 3,999,091,167.70/72,050.85
  6. Step 6: Final answer
    x = 55,503.73

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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.