Home / 76,364.18-105,388.32-42,379.08

Finding the Fourth Proportional to 76,364.18, 105,388.32 and 42,379.08

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Solution

The fourth proportional to 76,364.18, 105,388.32 and 42,379.08 is: 58,486.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,364.18 : 105,388.32 = 42,379.08 : x
  2. Step 2: Convert to fraction form
    76,364.18/105,388.32 = 42,379.08/x
  3. Step 3: Cross multiply
    76,364.18x = 105,388.32 × 42,379.08
  4. Step 4: Simplify right side
    76,364.18x = 4,466,260,044.35
  5. Step 5: Solve for x
    x = 4,466,260,044.35/76,364.18
  6. Step 6: Final answer
    x = 58,486.33

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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.