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Finding the Fourth Proportional to 93,191.25, 128,616.08 and 55,465.50

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Solution

The fourth proportional to 93,191.25, 128,616.08 and 55,465.50 is: 76,549.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,191.25 : 128,616.08 = 55,465.50 : x
  2. Step 2: Convert to fraction form
    93,191.25/128,616.08 = 55,465.50/x
  3. Step 3: Cross multiply
    93,191.25x = 128,616.08 × 55,465.50
  4. Step 4: Simplify right side
    93,191.25x = 7,133,754,907.91
  5. Step 5: Solve for x
    x = 7,133,754,907.91/93,191.25
  6. Step 6: Final answer
    x = 76,549.62

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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.