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Finding the Fourth Proportional to 93,430.80, 140,146.11 and 31,101.30

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Solution

The fourth proportional to 93,430.80, 140,146.11 and 31,101.30 is: 46,651.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,430.80 : 140,146.11 = 31,101.30 : x
  2. Step 2: Convert to fraction form
    93,430.80/140,146.11 = 31,101.30/x
  3. Step 3: Cross multiply
    93,430.80x = 140,146.11 × 31,101.30
  4. Step 4: Simplify right side
    93,430.80x = 4,358,726,210.94
  5. Step 5: Solve for x
    x = 4,358,726,210.94/93,430.80
  6. Step 6: Final answer
    x = 46,651.92

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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.