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Finding the Fourth Proportional to 78,792.48, 118,210.60 and 43,756.74

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Solution

The fourth proportional to 78,792.48, 118,210.60 and 43,756.74 is: 65,647.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,792.48 : 118,210.60 = 43,756.74 : x
  2. Step 2: Convert to fraction form
    78,792.48/118,210.60 = 43,756.74/x
  3. Step 3: Cross multiply
    78,792.48x = 118,210.60 × 43,756.74
  4. Step 4: Simplify right side
    78,792.48x = 5,172,510,566.19
  5. Step 5: Solve for x
    x = 5,172,510,566.19/78,792.48
  6. Step 6: Final answer
    x = 65,647.26

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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.