Home / 78,795.47-117,578.64-70,303.60

Finding the Fourth Proportional to 78,795.47, 117,578.64 and 70,303.60

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Solution

The fourth proportional to 78,795.47, 117,578.64 and 70,303.60 is: 104,907.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,795.47 : 117,578.64 = 70,303.60 : x
  2. Step 2: Convert to fraction form
    78,795.47/117,578.64 = 70,303.60/x
  3. Step 3: Cross multiply
    78,795.47x = 117,578.64 × 70,303.60
  4. Step 4: Simplify right side
    78,795.47x = 8,266,201,028.88
  5. Step 5: Solve for x
    x = 8,266,201,028.88/78,795.47
  6. Step 6: Final answer
    x = 104,907.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.