Home / 78,766.08-108,698.04-42,955.80

Finding the Fourth Proportional to 78,766.08, 108,698.04 and 42,955.80

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Solution

The fourth proportional to 78,766.08, 108,698.04 and 42,955.80 is: 59,279.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,766.08 : 108,698.04 = 42,955.80 : x
  2. Step 2: Convert to fraction form
    78,766.08/108,698.04 = 42,955.80/x
  3. Step 3: Cross multiply
    78,766.08x = 108,698.04 × 42,955.80
  4. Step 4: Simplify right side
    78,766.08x = 4,669,211,266.63
  5. Step 5: Solve for x
    x = 4,669,211,266.63/78,766.08
  6. Step 6: Final answer
    x = 59,279.47

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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.