Home / 91,003,670.80-136,505,506.20-39,985,334.80

Finding the Fourth Proportional to 91,003,670.80, 136,505,506.20 and 39,985,334.80

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Solution

The fourth proportional to 91,003,670.80, 136,505,506.20 and 39,985,334.80 is: 59,978,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,003,670.80 : 136,505,506.20 = 39,985,334.80 : x
  2. Step 2: Convert to fraction form
    91,003,670.80/136,505,506.20 = 39,985,334.80/x
  3. Step 3: Cross multiply
    91,003,670.80x = 136,505,506.20 × 39,985,334.80
  4. Step 4: Simplify right side
    91,003,670.80x = 5,458,218,367,450,475
  5. Step 5: Solve for x
    x = 5,458,218,367,450,475/91,003,670.80
  6. Step 6: Final answer
    x = 59,978,002.20

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1.5x scale

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.