Home / 77,688.51-107,213.34-43,698.58

Finding the Fourth Proportional to 77,688.51, 107,213.34 and 43,698.58

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Solution

The fourth proportional to 77,688.51, 107,213.34 and 43,698.58 is: 60,305.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,688.51 : 107,213.34 = 43,698.58 : x
  2. Step 2: Convert to fraction form
    77,688.51/107,213.34 = 43,698.58/x
  3. Step 3: Cross multiply
    77,688.51x = 107,213.34 × 43,698.58
  4. Step 4: Simplify right side
    77,688.51x = 4,685,069,960.50
  5. Step 5: Solve for x
    x = 4,685,069,960.50/77,688.51
  6. Step 6: Final answer
    x = 60,305.83

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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.