Home / 78,534.90-108,376.94-42,724.08

Finding the Fourth Proportional to 78,534.90, 108,376.94 and 42,724.08

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Solution

The fourth proportional to 78,534.90, 108,376.94 and 42,724.08 is: 58,958.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,534.90 : 108,376.94 = 42,724.08 : x
  2. Step 2: Convert to fraction form
    78,534.90/108,376.94 = 42,724.08/x
  3. Step 3: Cross multiply
    78,534.90x = 108,376.94 × 42,724.08
  4. Step 4: Simplify right side
    78,534.90x = 4,630,305,161.53
  5. Step 5: Solve for x
    x = 4,630,305,161.53/78,534.90
  6. Step 6: Final answer
    x = 58,958.57

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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.