Home / 72,971,157.15-100,700,204.83-39,931,413.28

Finding the Fourth Proportional to 72,971,157.15, 100,700,204.83 and 39,931,413.28

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Solution

The fourth proportional to 72,971,157.15, 100,700,204.83 and 39,931,413.28 is: 55,105,354.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,971,157.15 : 100,700,204.83 = 39,931,413.28 : x
  2. Step 2: Convert to fraction form
    72,971,157.15/100,700,204.83 = 39,931,413.28/x
  3. Step 3: Cross multiply
    72,971,157.15x = 100,700,204.83 × 39,931,413.28
  4. Step 4: Simplify right side
    72,971,157.15x = 4,021,101,496,095,803.50
  5. Step 5: Solve for x
    x = 4,021,101,496,095,803.50/72,971,157.15
  6. Step 6: Final answer
    x = 55,105,354.68

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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.