Home / 90,439,690.80-135,660,356.32-25,743,470.42

Finding the Fourth Proportional to 90,439,690.80, 135,660,356.32 and 25,743,470.42

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Solution

The fourth proportional to 90,439,690.80, 135,660,356.32 and 25,743,470.42 is: 38,615,439.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,439,690.80 : 135,660,356.32 = 25,743,470.42 : x
  2. Step 2: Convert to fraction form
    90,439,690.80/135,660,356.32 = 25,743,470.42/x
  3. Step 3: Cross multiply
    90,439,690.80x = 135,660,356.32 × 25,743,470.42
  4. Step 4: Simplify right side
    90,439,690.80x = 3,492,368,370,090,580
  5. Step 5: Solve for x
    x = 3,492,368,370,090,580/90,439,690.80
  6. Step 6: Final answer
    x = 38,615,439.08

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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.