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Finding the Fourth Proportional to 93,418.80, 140,128.13 and 31,089.30

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Solution

The fourth proportional to 93,418.80, 140,128.13 and 31,089.30 is: 46,633.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,418.80 : 140,128.13 = 31,089.30 : x
  2. Step 2: Convert to fraction form
    93,418.80/140,128.13 = 31,089.30/x
  3. Step 3: Cross multiply
    93,418.80x = 140,128.13 × 31,089.30
  4. Step 4: Simplify right side
    93,418.80x = 4,356,485,316.56
  5. Step 5: Solve for x
    x = 4,356,485,316.56/93,418.80
  6. Step 6: Final answer
    x = 46,633.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.