Home / 78,270.16-117,257.61-60,653.87

Finding the Fourth Proportional to 78,270.16, 117,257.61 and 60,653.87

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Solution

The fourth proportional to 78,270.16, 117,257.61 and 60,653.87 is: 90,866.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,270.16 : 117,257.61 = 60,653.87 : x
  2. Step 2: Convert to fraction form
    78,270.16/117,257.61 = 60,653.87/x
  3. Step 3: Cross multiply
    78,270.16x = 117,257.61 × 60,653.87
  4. Step 4: Simplify right side
    78,270.16x = 7,112,127,833.45
  5. Step 5: Solve for x
    x = 7,112,127,833.45/78,270.16
  6. Step 6: Final answer
    x = 90,866.40

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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.