Home / 83,783.75-115,621.59-47,985.62

Finding the Fourth Proportional to 83,783.75, 115,621.59 and 47,985.62

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Solution

The fourth proportional to 83,783.75, 115,621.59 and 47,985.62 is: 66,220.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,783.75 : 115,621.59 = 47,985.62 : x
  2. Step 2: Convert to fraction form
    83,783.75/115,621.59 = 47,985.62/x
  3. Step 3: Cross multiply
    83,783.75x = 115,621.59 × 47,985.62
  4. Step 4: Simplify right side
    83,783.75x = 5,548,173,681.54
  5. Step 5: Solve for x
    x = 5,548,173,681.54/83,783.75
  6. Step 6: Final answer
    x = 66,220.16

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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.