Home / 85,635.36-118,137.36-55,430.40

Finding the Fourth Proportional to 85,635.36, 118,137.36 and 55,430.40

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Solution

The fourth proportional to 85,635.36, 118,137.36 and 55,430.40 is: 76,468.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,635.36 : 118,137.36 = 55,430.40 : x
  2. Step 2: Convert to fraction form
    85,635.36/118,137.36 = 55,430.40/x
  3. Step 3: Cross multiply
    85,635.36x = 118,137.36 × 55,430.40
  4. Step 4: Simplify right side
    85,635.36x = 6,548,401,119.74
  5. Step 5: Solve for x
    x = 6,548,401,119.74/85,635.36
  6. Step 6: Final answer
    x = 76,468.43

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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.