Home / 78,415.28-117,622.74-34,036.28

Finding the Fourth Proportional to 78,415.28, 117,622.74 and 34,036.28

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Solution

The fourth proportional to 78,415.28, 117,622.74 and 34,036.28 is: 51,054.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,415.28 : 117,622.74 = 34,036.28 : x
  2. Step 2: Convert to fraction form
    78,415.28/117,622.74 = 34,036.28/x
  3. Step 3: Cross multiply
    78,415.28x = 117,622.74 × 34,036.28
  4. Step 4: Simplify right side
    78,415.28x = 4,003,440,513.01
  5. Step 5: Solve for x
    x = 4,003,440,513.01/78,415.28
  6. Step 6: Final answer
    x = 51,054.34

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1.5x scale

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.