Home / 72,171,021.60-108,235,537.20-39,838,413.60

Finding the Fourth Proportional to 72,171,021.60, 108,235,537.20 and 39,838,413.60

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Solution

The fourth proportional to 72,171,021.60, 108,235,537.20 and 39,838,413.60 is: 59,746,031.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,171,021.60 : 108,235,537.20 = 39,838,413.60 : x
  2. Step 2: Convert to fraction form
    72,171,021.60/108,235,537.20 = 39,838,413.60/x
  3. Step 3: Cross multiply
    72,171,021.60x = 108,235,537.20 × 39,838,413.60
  4. Step 4: Simplify right side
    72,171,021.60x = 4,311,932,097,191,786
  5. Step 5: Solve for x
    x = 4,311,932,097,191,786/72,171,021.60
  6. Step 6: Final answer
    x = 59,746,031.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.