Home / 78,459.40-117,586.70-36,334.60

Finding the Fourth Proportional to 78,459.40, 117,586.70 and 36,334.60

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Solution

The fourth proportional to 78,459.40, 117,586.70 and 36,334.60 is: 54,454.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,459.40 : 117,586.70 = 36,334.60 : x
  2. Step 2: Convert to fraction form
    78,459.40/117,586.70 = 36,334.60/x
  3. Step 3: Cross multiply
    78,459.40x = 117,586.70 × 36,334.60
  4. Step 4: Simplify right side
    78,459.40x = 4,272,465,709.82
  5. Step 5: Solve for x
    x = 4,272,465,709.82/78,459.40
  6. Step 6: Final answer
    x = 54,454.48

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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.