Home / 78,741,570.70-118,112,356.05-30,872,514.70

Finding the Fourth Proportional to 78,741,570.70, 118,112,356.05 and 30,872,514.70

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Solution

The fourth proportional to 78,741,570.70, 118,112,356.05 and 30,872,514.70 is: 46,308,772.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,741,570.70 : 118,112,356.05 = 30,872,514.70 : x
  2. Step 2: Convert to fraction form
    78,741,570.70/118,112,356.05 = 30,872,514.70/x
  3. Step 3: Cross multiply
    78,741,570.70x = 118,112,356.05 × 30,872,514.70
  4. Step 4: Simplify right side
    78,741,570.70x = 3,646,425,448,405,259
  5. Step 5: Solve for x
    x = 3,646,425,448,405,259/78,741,570.70
  6. Step 6: Final answer
    x = 46,308,772.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.