Home / 78,752.22-118,128.30-28,810.68

Finding the Fourth Proportional to 78,752.22, 118,128.30 and 28,810.68

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Solution

The fourth proportional to 78,752.22, 118,128.30 and 28,810.68 is: 43,216.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,752.22 : 118,128.30 = 28,810.68 : x
  2. Step 2: Convert to fraction form
    78,752.22/118,128.30 = 28,810.68/x
  3. Step 3: Cross multiply
    78,752.22x = 118,128.30 × 28,810.68
  4. Step 4: Simplify right side
    78,752.22x = 3,403,356,650.24
  5. Step 5: Solve for x
    x = 3,403,356,650.24/78,752.22
  6. Step 6: Final answer
    x = 43,216.01

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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.