Home / 78,818.07-118,039.19-43,670.55

Finding the Fourth Proportional to 78,818.07, 118,039.19 and 43,670.55

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Solution

The fourth proportional to 78,818.07, 118,039.19 and 43,670.55 is: 65,401.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,818.07 : 118,039.19 = 43,670.55 : x
  2. Step 2: Convert to fraction form
    78,818.07/118,039.19 = 43,670.55/x
  3. Step 3: Cross multiply
    78,818.07x = 118,039.19 × 43,670.55
  4. Step 4: Simplify right side
    78,818.07x = 5,154,836,130.50
  5. Step 5: Solve for x
    x = 5,154,836,130.50/78,818.07
  6. Step 6: Final answer
    x = 65,401.70

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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.