Home / 78,740.22-118,098.12-28,808.64

Finding the Fourth Proportional to 78,740.22, 118,098.12 and 28,808.64

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Solution

The fourth proportional to 78,740.22, 118,098.12 and 28,808.64 is: 43,208.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,740.22 : 118,098.12 = 28,808.64 : x
  2. Step 2: Convert to fraction form
    78,740.22/118,098.12 = 28,808.64/x
  3. Step 3: Cross multiply
    78,740.22x = 118,098.12 × 28,808.64
  4. Step 4: Simplify right side
    78,740.22x = 3,402,246,223.76
  5. Step 5: Solve for x
    x = 3,402,246,223.76/78,740.22
  6. Step 6: Final answer
    x = 43,208.49

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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.