Home / 78,756.85-118,135.28-41,302.45

Finding the Fourth Proportional to 78,756.85, 118,135.28 and 41,302.45

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Solution

The fourth proportional to 78,756.85, 118,135.28 and 41,302.45 is: 61,953.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,756.85 : 118,135.28 = 41,302.45 : x
  2. Step 2: Convert to fraction form
    78,756.85/118,135.28 = 41,302.45/x
  3. Step 3: Cross multiply
    78,756.85x = 118,135.28 × 41,302.45
  4. Step 4: Simplify right side
    78,756.85x = 4,879,276,288.92
  5. Step 5: Solve for x
    x = 4,879,276,288.92/78,756.85
  6. Step 6: Final answer
    x = 61,953.68

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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.