Home / 78,705.90-118,028.34-26,101.26

Finding the Fourth Proportional to 78,705.90, 118,028.34 and 26,101.26

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Solution

The fourth proportional to 78,705.90, 118,028.34 and 26,101.26 is: 39,141.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,705.90 : 118,028.34 = 26,101.26 : x
  2. Step 2: Convert to fraction form
    78,705.90/118,028.34 = 26,101.26/x
  3. Step 3: Cross multiply
    78,705.90x = 118,028.34 × 26,101.26
  4. Step 4: Simplify right side
    78,705.90x = 3,080,688,389.71
  5. Step 5: Solve for x
    x = 3,080,688,389.71/78,705.90
  6. Step 6: Final answer
    x = 39,141.77

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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.