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Finding the Fourth Proportional to 78,750.01, 118,103.95 and 53,785.81

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Solution

The fourth proportional to 78,750.01, 118,103.95 and 53,785.81 is: 80,664.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,750.01 : 118,103.95 = 53,785.81 : x
  2. Step 2: Convert to fraction form
    78,750.01/118,103.95 = 53,785.81/x
  3. Step 3: Cross multiply
    78,750.01x = 118,103.95 × 53,785.81
  4. Step 4: Simplify right side
    78,750.01x = 6,352,316,614.95
  5. Step 5: Solve for x
    x = 6,352,316,614.95/78,750.01
  6. Step 6: Final answer
    x = 80,664.33

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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.