Home / 78,219.04-107,913.96-51,376.12

Finding the Fourth Proportional to 78,219.04, 107,913.96 and 51,376.12

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Solution

The fourth proportional to 78,219.04, 107,913.96 and 51,376.12 is: 70,880.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,219.04 : 107,913.96 = 51,376.12 : x
  2. Step 2: Convert to fraction form
    78,219.04/107,913.96 = 51,376.12/x
  3. Step 3: Cross multiply
    78,219.04x = 107,913.96 × 51,376.12
  4. Step 4: Simplify right side
    78,219.04x = 5,544,200,558.64
  5. Step 5: Solve for x
    x = 5,544,200,558.64/78,219.04
  6. Step 6: Final answer
    x = 70,880.45

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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.