Home / 78,919.48-118,385.30-26,328.88

Finding the Fourth Proportional to 78,919.48, 118,385.30 and 26,328.88

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Solution

The fourth proportional to 78,919.48, 118,385.30 and 26,328.88 is: 39,495.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,919.48 : 118,385.30 = 26,328.88 : x
  2. Step 2: Convert to fraction form
    78,919.48/118,385.30 = 26,328.88/x
  3. Step 3: Cross multiply
    78,919.48x = 118,385.30 × 26,328.88
  4. Step 4: Simplify right side
    78,919.48x = 3,116,952,357.46
  5. Step 5: Solve for x
    x = 3,116,952,357.46/78,919.48
  6. Step 6: Final answer
    x = 39,495.35

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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.