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Finding the Fourth Proportional to 93,330.28, 139,839.58 and 65,578.60

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Solution

The fourth proportional to 93,330.28, 139,839.58 and 65,578.60 is: 98,258.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,330.28 : 139,839.58 = 65,578.60 : x
  2. Step 2: Convert to fraction form
    93,330.28/139,839.58 = 65,578.60/x
  3. Step 3: Cross multiply
    93,330.28x = 139,839.58 × 65,578.60
  4. Step 4: Simplify right side
    93,330.28x = 9,170,483,880.99
  5. Step 5: Solve for x
    x = 9,170,483,880.99/93,330.28
  6. Step 6: Final answer
    x = 98,258.40

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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.