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Finding the Fourth Proportional to 79,271.53, 109,395.60 and 45,284.51

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Solution

The fourth proportional to 79,271.53, 109,395.60 and 45,284.51 is: 62,493.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,271.53 : 109,395.60 = 45,284.51 : x
  2. Step 2: Convert to fraction form
    79,271.53/109,395.60 = 45,284.51/x
  3. Step 3: Cross multiply
    79,271.53x = 109,395.60 × 45,284.51
  4. Step 4: Simplify right side
    79,271.53x = 4,953,926,142.16
  5. Step 5: Solve for x
    x = 4,953,926,142.16/79,271.53
  6. Step 6: Final answer
    x = 62,493.14

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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.