Home / 79,387.07-109,555.40-43,580.34

Finding the Fourth Proportional to 79,387.07, 109,555.40 and 43,580.34

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Solution

The fourth proportional to 79,387.07, 109,555.40 and 43,580.34 is: 60,141.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,387.07 : 109,555.40 = 43,580.34 : x
  2. Step 2: Convert to fraction form
    79,387.07/109,555.40 = 43,580.34/x
  3. Step 3: Cross multiply
    79,387.07x = 109,555.40 × 43,580.34
  4. Step 4: Simplify right side
    79,387.07x = 4,774,461,362.93
  5. Step 5: Solve for x
    x = 4,774,461,362.93/79,387.07
  6. Step 6: Final answer
    x = 60,141.55

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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.