Home / 78,349.07-117,570.30-28,433.06

Finding the Fourth Proportional to 78,349.07, 117,570.30 and 28,433.06

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Solution

The fourth proportional to 78,349.07, 117,570.30 and 28,433.06 is: 42,666.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,349.07 : 117,570.30 = 28,433.06 : x
  2. Step 2: Convert to fraction form
    78,349.07/117,570.30 = 28,433.06/x
  3. Step 3: Cross multiply
    78,349.07x = 117,570.30 × 28,433.06
  4. Step 4: Simplify right side
    78,349.07x = 3,342,883,394.12
  5. Step 5: Solve for x
    x = 3,342,883,394.12/78,349.07
  6. Step 6: Final answer
    x = 42,666.54

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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.