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Finding the Fourth Proportional to 78,967.62, 108,975.51 and 43,158.06

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Solution

The fourth proportional to 78,967.62, 108,975.51 and 43,158.06 is: 59,558.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,967.62 : 108,975.51 = 43,158.06 : x
  2. Step 2: Convert to fraction form
    78,967.62/108,975.51 = 43,158.06/x
  3. Step 3: Cross multiply
    78,967.62x = 108,975.51 × 43,158.06
  4. Step 4: Simplify right side
    78,967.62x = 4,703,171,599.11
  5. Step 5: Solve for x
    x = 4,703,171,599.11/78,967.62
  6. Step 6: Final answer
    x = 59,558.23

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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.