Home / 77,120.45-106,431.59-43,140.14

Finding the Fourth Proportional to 77,120.45, 106,431.59 and 43,140.14

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Solution

The fourth proportional to 77,120.45, 106,431.59 and 43,140.14 is: 59,536.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,120.45 : 106,431.59 = 43,140.14 : x
  2. Step 2: Convert to fraction form
    77,120.45/106,431.59 = 43,140.14/x
  3. Step 3: Cross multiply
    77,120.45x = 106,431.59 × 43,140.14
  4. Step 4: Simplify right side
    77,120.45x = 4,591,473,268.71
  5. Step 5: Solve for x
    x = 4,591,473,268.71/77,120.45
  6. Step 6: Final answer
    x = 59,536.39

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1.5x scale

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.