Home / 79,477.02-109,619.30-74,717.64

Finding the Fourth Proportional to 79,477.02, 109,619.30 and 74,717.64

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Solution

The fourth proportional to 79,477.02, 109,619.30 and 74,717.64 is: 103,054.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,477.02 : 109,619.30 = 74,717.64 : x
  2. Step 2: Convert to fraction form
    79,477.02/109,619.30 = 74,717.64/x
  3. Step 3: Cross multiply
    79,477.02x = 109,619.30 × 74,717.64
  4. Step 4: Simplify right side
    79,477.02x = 8,190,495,394.45
  5. Step 5: Solve for x
    x = 8,190,495,394.45/79,477.02
  6. Step 6: Final answer
    x = 103,054.89

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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.