Home / 78,340.03-108,126.30-48,141.21

Finding the Fourth Proportional to 78,340.03, 108,126.30 and 48,141.21

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Solution

The fourth proportional to 78,340.03, 108,126.30 and 48,141.21 is: 66,445.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,340.03 : 108,126.30 = 48,141.21 : x
  2. Step 2: Convert to fraction form
    78,340.03/108,126.30 = 48,141.21/x
  3. Step 3: Cross multiply
    78,340.03x = 108,126.30 × 48,141.21
  4. Step 4: Simplify right side
    78,340.03x = 5,205,330,914.82
  5. Step 5: Solve for x
    x = 5,205,330,914.82/78,340.03
  6. Step 6: Final answer
    x = 66,445.35

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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.