Home / 78,328.36-117,488.40-48,348.28

Finding the Fourth Proportional to 78,328.36, 117,488.40 and 48,348.28

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Solution

The fourth proportional to 78,328.36, 117,488.40 and 48,348.28 is: 72,519.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,328.36 : 117,488.40 = 48,348.28 : x
  2. Step 2: Convert to fraction form
    78,328.36/117,488.40 = 48,348.28/x
  3. Step 3: Cross multiply
    78,328.36x = 117,488.40 × 48,348.28
  4. Step 4: Simplify right side
    78,328.36x = 5,680,362,059.95
  5. Step 5: Solve for x
    x = 5,680,362,059.95/78,328.36
  6. Step 6: Final answer
    x = 72,519.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.