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Finding the Fourth Proportional to 79,153.94, 109,238.69 and 45,154.63

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Solution

The fourth proportional to 79,153.94, 109,238.69 and 45,154.63 is: 62,316.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,153.94 : 109,238.69 = 45,154.63 : x
  2. Step 2: Convert to fraction form
    79,153.94/109,238.69 = 45,154.63/x
  3. Step 3: Cross multiply
    79,153.94x = 109,238.69 × 45,154.63
  4. Step 4: Simplify right side
    79,153.94x = 4,932,632,878.07
  5. Step 5: Solve for x
    x = 4,932,632,878.07/79,153.94
  6. Step 6: Final answer
    x = 62,316.96

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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.