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Finding the Fourth Proportional to 93,460.65, 128,971.20 and 53,170.62

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Solution

The fourth proportional to 93,460.65, 128,971.20 and 53,170.62 is: 73,372.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,460.65 : 128,971.20 = 53,170.62 : x
  2. Step 2: Convert to fraction form
    93,460.65/128,971.20 = 53,170.62/x
  3. Step 3: Cross multiply
    93,460.65x = 128,971.20 × 53,170.62
  4. Step 4: Simplify right side
    93,460.65x = 6,857,478,666.14
  5. Step 5: Solve for x
    x = 6,857,478,666.14/93,460.65
  6. Step 6: Final answer
    x = 73,372.90

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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.