Home / 78,490,290.71-108,316,601.49-43,691,201.88

Finding the Fourth Proportional to 78,490,290.71, 108,316,601.49 and 43,691,201.88

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Solution

The fourth proportional to 78,490,290.71, 108,316,601.49 and 43,691,201.88 is: 60,293,858.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,490,290.71 : 108,316,601.49 = 43,691,201.88 : x
  2. Step 2: Convert to fraction form
    78,490,290.71/108,316,601.49 = 43,691,201.88/x
  3. Step 3: Cross multiply
    78,490,290.71x = 108,316,601.49 × 43,691,201.88
  4. Step 4: Simplify right side
    78,490,290.71x = 4,732,482,502,717,232
  5. Step 5: Solve for x
    x = 4,732,482,502,717,232/78,490,290.71
  6. Step 6: Final answer
    x = 60,293,858.77

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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.