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Finding the Fourth Proportional to 73,002.60, 109,503.90 and 65,615.40

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Solution

The fourth proportional to 73,002.60, 109,503.90 and 65,615.40 is: 98,423.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,002.60 : 109,503.90 = 65,615.40 : x
  2. Step 2: Convert to fraction form
    73,002.60/109,503.90 = 65,615.40/x
  3. Step 3: Cross multiply
    73,002.60x = 109,503.90 × 65,615.40
  4. Step 4: Simplify right side
    73,002.60x = 7,185,142,200.06
  5. Step 5: Solve for x
    x = 7,185,142,200.06/73,002.60
  6. Step 6: Final answer
    x = 98,423.10

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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.