Home / 78,913.31-118,417.14-28,998.45

Finding the Fourth Proportional to 78,913.31, 118,417.14 and 28,998.45

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Solution

The fourth proportional to 78,913.31, 118,417.14 and 28,998.45 is: 43,515.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,913.31 : 118,417.14 = 28,998.45 : x
  2. Step 2: Convert to fraction form
    78,913.31/118,417.14 = 28,998.45/x
  3. Step 3: Cross multiply
    78,913.31x = 118,417.14 × 28,998.45
  4. Step 4: Simplify right side
    78,913.31x = 3,433,913,513.43
  5. Step 5: Solve for x
    x = 3,433,913,513.43/78,913.31
  6. Step 6: Final answer
    x = 43,515.01

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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.