Home / 38,718,918.95-53,430,471.32-21,077,454.74

Finding the Fourth Proportional to 38,718,918.95, 53,430,471.32 and 21,077,454.74

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Solution

The fourth proportional to 38,718,918.95, 53,430,471.32 and 21,077,454.74 is: 29,085,996.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,718,918.95 : 53,430,471.32 = 21,077,454.74 : x
  2. Step 2: Convert to fraction form
    38,718,918.95/53,430,471.32 = 21,077,454.74/x
  3. Step 3: Cross multiply
    38,718,918.95x = 53,430,471.32 × 21,077,454.74
  4. Step 4: Simplify right side
    38,718,918.95x = 1,126,178,340,611,628.25
  5. Step 5: Solve for x
    x = 1,126,178,340,611,628.25/38,718,918.95
  6. Step 6: Final answer
    x = 29,085,996.49

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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.