Home / 38,718,915.20-53,430,466.13-21,077,451

Finding the Fourth Proportional to 38,718,915.20, 53,430,466.13 and 21,077,451

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Solution

The fourth proportional to 38,718,915.20, 53,430,466.13 and 21,077,451 is: 29,085,991.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,718,915.20 : 53,430,466.13 = 21,077,451 : x
  2. Step 2: Convert to fraction form
    38,718,915.20/53,430,466.13 = 21,077,451/x
  3. Step 3: Cross multiply
    38,718,915.20x = 53,430,466.13 × 21,077,451
  4. Step 4: Simplify right side
    38,718,915.20x = 1,126,178,031,814,928.25
  5. Step 5: Solve for x
    x = 1,126,178,031,814,928.25/38,718,915.20
  6. Step 6: Final answer
    x = 29,085,991.33

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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.