Home / 72,245.98-99,709.50-40,417.03

Finding the Fourth Proportional to 72,245.98, 99,709.50 and 40,417.03

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Solution

The fourth proportional to 72,245.98, 99,709.50 and 40,417.03 is: 55,781.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,245.98 : 99,709.50 = 40,417.03 : x
  2. Step 2: Convert to fraction form
    72,245.98/99,709.50 = 40,417.03/x
  3. Step 3: Cross multiply
    72,245.98x = 99,709.50 × 40,417.03
  4. Step 4: Simplify right side
    72,245.98x = 4,029,961,852.79
  5. Step 5: Solve for x
    x = 4,029,961,852.79/72,245.98
  6. Step 6: Final answer
    x = 55,781.12

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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.