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Finding the Fourth Proportional to 77,881.92, 107,512.94 and 45,612.06

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Solution

The fourth proportional to 77,881.92, 107,512.94 and 45,612.06 is: 62,965.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,881.92 : 107,512.94 = 45,612.06 : x
  2. Step 2: Convert to fraction form
    77,881.92/107,512.94 = 45,612.06/x
  3. Step 3: Cross multiply
    77,881.92x = 107,512.94 × 45,612.06
  4. Step 4: Simplify right side
    77,881.92x = 4,903,886,670.06
  5. Step 5: Solve for x
    x = 4,903,886,670.06/77,881.92
  6. Step 6: Final answer
    x = 62,965.66

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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.