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Finding the Fourth Proportional to 93,276.72, 128,771.10 and 74,928.60

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Solution

The fourth proportional to 93,276.72, 128,771.10 and 74,928.60 is: 103,441.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,276.72 : 128,771.10 = 74,928.60 : x
  2. Step 2: Convert to fraction form
    93,276.72/128,771.10 = 74,928.60/x
  3. Step 3: Cross multiply
    93,276.72x = 128,771.10 × 74,928.60
  4. Step 4: Simplify right side
    93,276.72x = 9,648,638,243.46
  5. Step 5: Solve for x
    x = 9,648,638,243.46/93,276.72
  6. Step 6: Final answer
    x = 103,441.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.