Home / 78,288.46-117,285.06-60,672.16

Finding the Fourth Proportional to 78,288.46, 117,285.06 and 60,672.16

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Solution

The fourth proportional to 78,288.46, 117,285.06 and 60,672.16 is: 90,893.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,288.46 : 117,285.06 = 60,672.16 : x
  2. Step 2: Convert to fraction form
    78,288.46/117,285.06 = 60,672.16/x
  3. Step 3: Cross multiply
    78,288.46x = 117,285.06 × 60,672.16
  4. Step 4: Simplify right side
    78,288.46x = 7,115,937,925.93
  5. Step 5: Solve for x
    x = 7,115,937,925.93/78,288.46
  6. Step 6: Final answer
    x = 90,893.83

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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.