Home / 72,775,479.87-100,431,560.58-39,737,038.47

Finding the Fourth Proportional to 72,775,479.87, 100,431,560.58 and 39,737,038.47

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Solution

The fourth proportional to 72,775,479.87, 100,431,560.58 and 39,737,038.47 is: 54,837,876.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,775,479.87 : 100,431,560.58 = 39,737,038.47 : x
  2. Step 2: Convert to fraction form
    72,775,479.87/100,431,560.58 = 39,737,038.47/x
  3. Step 3: Cross multiply
    72,775,479.87x = 100,431,560.58 × 39,737,038.47
  4. Step 4: Simplify right side
    72,775,479.87x = 3,990,852,786,369,595.50
  5. Step 5: Solve for x
    x = 3,990,852,786,369,595.50/72,775,479.87
  6. Step 6: Final answer
    x = 54,837,876.62

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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.