Home / 28,130,970.66-42,196,218.96-21,988,119.33

Finding the Fourth Proportional to 28,130,970.66, 42,196,218.96 and 21,988,119.33

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Solution

The fourth proportional to 28,130,970.66, 42,196,218.96 and 21,988,119.33 is: 32,981,993.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130,970.66 : 42,196,218.96 = 21,988,119.33 : x
  2. Step 2: Convert to fraction form
    28,130,970.66/42,196,218.96 = 21,988,119.33/x
  3. Step 3: Cross multiply
    28,130,970.66x = 42,196,218.96 × 21,988,119.33
  4. Step 4: Simplify right side
    28,130,970.66x = 927,815,497,657,347.75
  5. Step 5: Solve for x
    x = 927,815,497,657,347.75/28,130,970.66
  6. Step 6: Final answer
    x = 32,981,993.72

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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.