Home / 78,030.18-116,975.43-28,098.54

Finding the Fourth Proportional to 78,030.18, 116,975.43 and 28,098.54

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Solution

The fourth proportional to 78,030.18, 116,975.43 and 28,098.54 is: 42,122.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,030.18 : 116,975.43 = 28,098.54 : x
  2. Step 2: Convert to fraction form
    78,030.18/116,975.43 = 28,098.54/x
  3. Step 3: Cross multiply
    78,030.18x = 116,975.43 × 28,098.54
  4. Step 4: Simplify right side
    78,030.18x = 3,286,838,798.87
  5. Step 5: Solve for x
    x = 3,286,838,798.87/78,030.18
  6. Step 6: Final answer
    x = 42,122.66

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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.