Home / 78,325.52-108,089.35-42,515.52

Finding the Fourth Proportional to 78,325.52, 108,089.35 and 42,515.52

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Solution

The fourth proportional to 78,325.52, 108,089.35 and 42,515.52 is: 58,671.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,325.52 : 108,089.35 = 42,515.52 : x
  2. Step 2: Convert to fraction form
    78,325.52/108,089.35 = 42,515.52/x
  3. Step 3: Cross multiply
    78,325.52x = 108,089.35 × 42,515.52
  4. Step 4: Simplify right side
    78,325.52x = 4,595,474,709.13
  5. Step 5: Solve for x
    x = 4,595,474,709.13/78,325.52
  6. Step 6: Final answer
    x = 58,671.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.