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Finding the Fourth Proportional to 79,515, 109,615.06 and 55,567.32

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Solution

The fourth proportional to 79,515, 109,615.06 and 55,567.32 is: 76,602.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,515 : 109,615.06 = 55,567.32 : x
  2. Step 2: Convert to fraction form
    79,515/109,615.06 = 55,567.32/x
  3. Step 3: Cross multiply
    79,515x = 109,615.06 × 55,567.32
  4. Step 4: Simplify right side
    79,515x = 6,091,015,115.84
  5. Step 5: Solve for x
    x = 6,091,015,115.84/79,515
  6. Step 6: Final answer
    x = 76,602.09

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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.