Home / 78,349.37-117,570.76-28,433.36

Finding the Fourth Proportional to 78,349.37, 117,570.76 and 28,433.36

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Solution

The fourth proportional to 78,349.37, 117,570.76 and 28,433.36 is: 42,667.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,349.37 : 117,570.76 = 28,433.36 : x
  2. Step 2: Convert to fraction form
    78,349.37/117,570.76 = 28,433.36/x
  3. Step 3: Cross multiply
    78,349.37x = 117,570.76 × 28,433.36
  4. Step 4: Simplify right side
    78,349.37x = 3,342,931,967.40
  5. Step 5: Solve for x
    x = 3,342,931,967.40/78,349.37
  6. Step 6: Final answer
    x = 42,667.00

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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.