Home / 100,405,807.47-138,560,011.83-56,352,806.46

Finding the Fourth Proportional to 100,405,807.47, 138,560,011.83 and 56,352,806.46

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Solution

The fourth proportional to 100,405,807.47, 138,560,011.83 and 56,352,806.46 is: 77,766,871.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,405,807.47 : 138,560,011.83 = 56,352,806.46 : x
  2. Step 2: Convert to fraction form
    100,405,807.47/138,560,011.83 = 56,352,806.46/x
  3. Step 3: Cross multiply
    100,405,807.47x = 138,560,011.83 × 56,352,806.46
  4. Step 4: Simplify right side
    100,405,807.47x = 7,808,245,529,751,301
  5. Step 5: Solve for x
    x = 7,808,245,529,751,301/100,405,807.47
  6. Step 6: Final answer
    x = 77,766,871.52

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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.