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Finding the Fourth Proportional to 79,208.71, 109,303.83 and 45,215.84

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Solution

The fourth proportional to 79,208.71, 109,303.83 and 45,215.84 is: 62,395.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,208.71 : 109,303.83 = 45,215.84 : x
  2. Step 2: Convert to fraction form
    79,208.71/109,303.83 = 45,215.84/x
  3. Step 3: Cross multiply
    79,208.71x = 109,303.83 × 45,215.84
  4. Step 4: Simplify right side
    79,208.71x = 4,942,264,761.93
  5. Step 5: Solve for x
    x = 4,942,264,761.93/79,208.71
  6. Step 6: Final answer
    x = 62,395.47

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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.