Home / 78,977.03-118,471.77-26,386.70

Finding the Fourth Proportional to 78,977.03, 118,471.77 and 26,386.70

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Solution

The fourth proportional to 78,977.03, 118,471.77 and 26,386.70 is: 39,582.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,977.03 : 118,471.77 = 26,386.70 : x
  2. Step 2: Convert to fraction form
    78,977.03/118,471.77 = 26,386.70/x
  3. Step 3: Cross multiply
    78,977.03x = 118,471.77 × 26,386.70
  4. Step 4: Simplify right side
    78,977.03x = 3,126,078,461.10
  5. Step 5: Solve for x
    x = 3,126,078,461.10/78,977.03
  6. Step 6: Final answer
    x = 39,582.12

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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.