Home / 39,017,621.78-53,843,613.45-21,613,913.18

Finding the Fourth Proportional to 39,017,621.78, 53,843,613.45 and 21,613,913.18

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Solution

The fourth proportional to 39,017,621.78, 53,843,613.45 and 21,613,913.18 is: 29,826,809.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,017,621.78 : 53,843,613.45 = 21,613,913.18 : x
  2. Step 2: Convert to fraction form
    39,017,621.78/53,843,613.45 = 21,613,913.18/x
  3. Step 3: Cross multiply
    39,017,621.78x = 53,843,613.45 × 21,613,913.18
  4. Step 4: Simplify right side
    39,017,621.78x = 1,163,771,186,405,780.25
  5. Step 5: Solve for x
    x = 1,163,771,186,405,780.25/39,017,621.78
  6. Step 6: Final answer
    x = 29,826,809.87

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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.