Home / 78,910.36-118,365.98-26,319.70

Finding the Fourth Proportional to 78,910.36, 118,365.98 and 26,319.70

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Solution

The fourth proportional to 78,910.36, 118,365.98 and 26,319.70 is: 39,479.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,910.36 : 118,365.98 = 26,319.70 : x
  2. Step 2: Convert to fraction form
    78,910.36/118,365.98 = 26,319.70/x
  3. Step 3: Cross multiply
    78,910.36x = 118,365.98 × 26,319.70
  4. Step 4: Simplify right side
    78,910.36x = 3,115,356,360.38
  5. Step 5: Solve for x
    x = 3,115,356,360.38/78,910.36
  6. Step 6: Final answer
    x = 39,479.69

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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.