Home / 38,690,669.45-53,393,547.09-21,049,672.16

Finding the Fourth Proportional to 38,690,669.45, 53,393,547.09 and 21,049,672.16

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Solution

The fourth proportional to 38,690,669.45, 53,393,547.09 and 21,049,672.16 is: 29,048,777.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,690,669.45 : 53,393,547.09 = 21,049,672.16 : x
  2. Step 2: Convert to fraction form
    38,690,669.45/53,393,547.09 = 21,049,672.16/x
  3. Step 3: Cross multiply
    38,690,669.45x = 53,393,547.09 × 21,049,672.16
  4. Step 4: Simplify right side
    38,690,669.45x = 1,123,916,661,916,442.25
  5. Step 5: Solve for x
    x = 1,123,916,661,916,442.25/38,690,669.45
  6. Step 6: Final answer
    x = 29,048,777.85

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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.