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Finding the Fourth Proportional to 93,309.42, 128,754.01 and 55,070.57

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Solution

The fourth proportional to 93,309.42, 128,754.01 and 55,070.57 is: 75,989.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,309.42 : 128,754.01 = 55,070.57 : x
  2. Step 2: Convert to fraction form
    93,309.42/128,754.01 = 55,070.57/x
  3. Step 3: Cross multiply
    93,309.42x = 128,754.01 × 55,070.57
  4. Step 4: Simplify right side
    93,309.42x = 7,090,556,720.49
  5. Step 5: Solve for x
    x = 7,090,556,720.49/93,309.42
  6. Step 6: Final answer
    x = 75,989.72

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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.