Home / 78,347.07-117,567.30-28,431.06

Finding the Fourth Proportional to 78,347.07, 117,567.30 and 28,431.06

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Solution

The fourth proportional to 78,347.07, 117,567.30 and 28,431.06 is: 42,663.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,347.07 : 117,567.30 = 28,431.06 : x
  2. Step 2: Convert to fraction form
    78,347.07/117,567.30 = 28,431.06/x
  3. Step 3: Cross multiply
    78,347.07x = 117,567.30 × 28,431.06
  4. Step 4: Simplify right side
    78,347.07x = 3,342,562,230.35
  5. Step 5: Solve for x
    x = 3,342,562,230.35/78,347.07
  6. Step 6: Final answer
    x = 42,663.53

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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.