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Finding the Fourth Proportional to 76,169.64, 105,081.53 and 45,937.77

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Solution

The fourth proportional to 76,169.64, 105,081.53 and 45,937.77 is: 63,374.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,169.64 : 105,081.53 = 45,937.77 : x
  2. Step 2: Convert to fraction form
    76,169.64/105,081.53 = 45,937.77/x
  3. Step 3: Cross multiply
    76,169.64x = 105,081.53 × 45,937.77
  4. Step 4: Simplify right side
    76,169.64x = 4,827,211,156.39
  5. Step 5: Solve for x
    x = 4,827,211,156.39/76,169.64
  6. Step 6: Final answer
    x = 63,374.48

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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.