Home / 78,979.74-108,885.51-50,636.22

Finding the Fourth Proportional to 78,979.74, 108,885.51 and 50,636.22

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Solution

The fourth proportional to 78,979.74, 108,885.51 and 50,636.22 is: 69,809.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,979.74 : 108,885.51 = 50,636.22 : x
  2. Step 2: Convert to fraction form
    78,979.74/108,885.51 = 50,636.22/x
  3. Step 3: Cross multiply
    78,979.74x = 108,885.51 × 50,636.22
  4. Step 4: Simplify right side
    78,979.74x = 5,513,550,639.17
  5. Step 5: Solve for x
    x = 5,513,550,639.17/78,979.74
  6. Step 6: Final answer
    x = 69,809.68

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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.