Home / 78,938.39-108,933.70-43,127.63

Finding the Fourth Proportional to 78,938.39, 108,933.70 and 43,127.63

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Solution

The fourth proportional to 78,938.39, 108,933.70 and 43,127.63 is: 59,515.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,938.39 : 108,933.70 = 43,127.63 : x
  2. Step 2: Convert to fraction form
    78,938.39/108,933.70 = 43,127.63/x
  3. Step 3: Cross multiply
    78,938.39x = 108,933.70 × 43,127.63
  4. Step 4: Simplify right side
    78,938.39x = 4,698,052,308.13
  5. Step 5: Solve for x
    x = 4,698,052,308.13/78,938.39
  6. Step 6: Final answer
    x = 59,515.43

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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.