Home / 78,762.08-118,072.05-53,470.11

Finding the Fourth Proportional to 78,762.08, 118,072.05 and 53,470.11

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Solution

The fourth proportional to 78,762.08, 118,072.05 and 53,470.11 is: 80,156.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,762.08 : 118,072.05 = 53,470.11 : x
  2. Step 2: Convert to fraction form
    78,762.08/118,072.05 = 53,470.11/x
  3. Step 3: Cross multiply
    78,762.08x = 118,072.05 × 53,470.11
  4. Step 4: Simplify right side
    78,762.08x = 6,313,325,501.43
  5. Step 5: Solve for x
    x = 6,313,325,501.43/78,762.08
  6. Step 6: Final answer
    x = 80,156.92

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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.