Home / 78,899.51-118,345.26-28,975.79

Finding the Fourth Proportional to 78,899.51, 118,345.26 and 28,975.79

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Solution

The fourth proportional to 78,899.51, 118,345.26 and 28,975.79 is: 43,462.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,899.51 : 118,345.26 = 28,975.79 : x
  2. Step 2: Convert to fraction form
    78,899.51/118,345.26 = 28,975.79/x
  3. Step 3: Cross multiply
    78,899.51x = 118,345.26 × 28,975.79
  4. Step 4: Simplify right side
    78,899.51x = 3,429,147,401.26
  5. Step 5: Solve for x
    x = 3,429,147,401.26/78,899.51
  6. Step 6: Final answer
    x = 43,462.21

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1.5x scale

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.