Home / 78,493.40-117,637.70-36,368.60

Finding the Fourth Proportional to 78,493.40, 117,637.70 and 36,368.60

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Solution

The fourth proportional to 78,493.40, 117,637.70 and 36,368.60 is: 54,505.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,493.40 : 117,637.70 = 36,368.60 : x
  2. Step 2: Convert to fraction form
    78,493.40/117,637.70 = 36,368.60/x
  3. Step 3: Cross multiply
    78,493.40x = 117,637.70 × 36,368.60
  4. Step 4: Simplify right side
    78,493.40x = 4,278,318,456.22
  5. Step 5: Solve for x
    x = 4,278,318,456.22/78,493.40
  6. Step 6: Final answer
    x = 54,505.45

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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.