Home / 91,939,792.80-137,928,351.60-31,361,642.40

Finding the Fourth Proportional to 91,939,792.80, 137,928,351.60 and 31,361,642.40

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Solution

The fourth proportional to 91,939,792.80, 137,928,351.60 and 31,361,642.40 is: 47,048,829.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,939,792.80 : 137,928,351.60 = 31,361,642.40 : x
  2. Step 2: Convert to fraction form
    91,939,792.80/137,928,351.60 = 31,361,642.40/x
  3. Step 3: Cross multiply
    91,939,792.80x = 137,928,351.60 × 31,361,642.40
  4. Step 4: Simplify right side
    91,939,792.80x = 4,325,659,639,700,667.50
  5. Step 5: Solve for x
    x = 4,325,659,639,700,667.50/91,939,792.80
  6. Step 6: Final answer
    x = 47,048,829.54

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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.