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Finding the Fourth Proportional to 56,382,978.20, 84,574,467.30 and 54,965,802.20

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Solution

The fourth proportional to 56,382,978.20, 84,574,467.30 and 54,965,802.20 is: 82,448,703.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,382,978.20 : 84,574,467.30 = 54,965,802.20 : x
  2. Step 2: Convert to fraction form
    56,382,978.20/84,574,467.30 = 54,965,802.20/x
  3. Step 3: Cross multiply
    56,382,978.20x = 84,574,467.30 × 54,965,802.20
  4. Step 4: Simplify right side
    56,382,978.20x = 4,648,703,440,782,168
  5. Step 5: Solve for x
    x = 4,648,703,440,782,168/56,382,978.20
  6. Step 6: Final answer
    x = 82,448,703.30

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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.