Home / 72,245,157.35-99,698,381.44-39,205,406.57

Finding the Fourth Proportional to 72,245,157.35, 99,698,381.44 and 39,205,406.57

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Solution

The fourth proportional to 72,245,157.35, 99,698,381.44 and 39,205,406.57 is: 54,103,495.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,245,157.35 : 99,698,381.44 = 39,205,406.57 : x
  2. Step 2: Convert to fraction form
    72,245,157.35/99,698,381.44 = 39,205,406.57/x
  3. Step 3: Cross multiply
    72,245,157.35x = 99,698,381.44 × 39,205,406.57
  4. Step 4: Simplify right side
    72,245,157.35x = 3,908,715,578,227,650
  5. Step 5: Solve for x
    x = 3,908,715,578,227,650/72,245,157.35
  6. Step 6: Final answer
    x = 54,103,495.96

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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.