Home / 31,084,520.44-42,879,417.49-21,805,905.03

Finding the Fourth Proportional to 31,084,520.44, 42,879,417.49 and 21,805,905.03

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Solution

The fourth proportional to 31,084,520.44, 42,879,417.49 and 21,805,905.03 is: 30,080,068.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,084,520.44 : 42,879,417.49 = 21,805,905.03 : x
  2. Step 2: Convert to fraction form
    31,084,520.44/42,879,417.49 = 21,805,905.03/x
  3. Step 3: Cross multiply
    31,084,520.44x = 42,879,417.49 × 21,805,905.03
  4. Step 4: Simplify right side
    31,084,520.44x = 935,024,505,528,661.12
  5. Step 5: Solve for x
    x = 935,024,505,528,661.12/31,084,520.44
  6. Step 6: Final answer
    x = 30,080,068.55

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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.