Home / 78,303.51-117,517.64-28,397.93

Finding the Fourth Proportional to 78,303.51, 117,517.64 and 28,397.93

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Solution

The fourth proportional to 78,303.51, 117,517.64 and 28,397.93 is: 42,619.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,303.51 : 117,517.64 = 28,397.93 : x
  2. Step 2: Convert to fraction form
    78,303.51/117,517.64 = 28,397.93/x
  3. Step 3: Cross multiply
    78,303.51x = 117,517.64 × 28,397.93
  4. Step 4: Simplify right side
    78,303.51x = 3,337,256,984.91
  5. Step 5: Solve for x
    x = 3,337,256,984.91/78,303.51
  6. Step 6: Final answer
    x = 42,619.51

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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.