Home / 78,528.43-117,724.60-31,750.93

Finding the Fourth Proportional to 78,528.43, 117,724.60 and 31,750.93

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Solution

The fourth proportional to 78,528.43, 117,724.60 and 31,750.93 is: 47,598.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,528.43 : 117,724.60 = 31,750.93 : x
  2. Step 2: Convert to fraction form
    78,528.43/117,724.60 = 31,750.93/x
  3. Step 3: Cross multiply
    78,528.43x = 117,724.60 × 31,750.93
  4. Step 4: Simplify right side
    78,528.43x = 3,737,865,533.88
  5. Step 5: Solve for x
    x = 3,737,865,533.88/78,528.43
  6. Step 6: Final answer
    x = 47,598.88

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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.