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Finding the Fourth Proportional to 93,416.82, 128,914.52 and 53,130.54

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Solution

The fourth proportional to 93,416.82, 128,914.52 and 53,130.54 is: 73,319.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,416.82 : 128,914.52 = 53,130.54 : x
  2. Step 2: Convert to fraction form
    93,416.82/128,914.52 = 53,130.54/x
  3. Step 3: Cross multiply
    93,416.82x = 128,914.52 × 53,130.54
  4. Step 4: Simplify right side
    93,416.82x = 6,849,298,061.44
  5. Step 5: Solve for x
    x = 6,849,298,061.44/93,416.82
  6. Step 6: Final answer
    x = 73,319.75

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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.