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Finding the Fourth Proportional to 78,989.16, 118,459.80 and 41,529.02

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Solution

The fourth proportional to 78,989.16, 118,459.80 and 41,529.02 is: 62,280.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,989.16 : 118,459.80 = 41,529.02 : x
  2. Step 2: Convert to fraction form
    78,989.16/118,459.80 = 41,529.02/x
  3. Step 3: Cross multiply
    78,989.16x = 118,459.80 × 41,529.02
  4. Step 4: Simplify right side
    78,989.16x = 4,919,519,403.40
  5. Step 5: Solve for x
    x = 4,919,519,403.40/78,989.16
  6. Step 6: Final answer
    x = 62,280.94

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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.