Home / 30,270,331.80-45,405,497.70-21,182,690.70

Finding the Fourth Proportional to 30,270,331.80, 45,405,497.70 and 21,182,690.70

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Solution

The fourth proportional to 30,270,331.80, 45,405,497.70 and 21,182,690.70 is: 31,774,036.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,270,331.80 : 45,405,497.70 = 21,182,690.70 : x
  2. Step 2: Convert to fraction form
    30,270,331.80/45,405,497.70 = 21,182,690.70/x
  3. Step 3: Cross multiply
    30,270,331.80x = 45,405,497.70 × 21,182,690.70
  4. Step 4: Simplify right side
    30,270,331.80x = 961,810,613,858,661.38
  5. Step 5: Solve for x
    x = 961,810,613,858,661.38/30,270,331.80
  6. Step 6: Final answer
    x = 31,774,036.05

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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.