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Finding the Fourth Proportional to 93,485.40, 140,228.90 and 31,155.90

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Solution

The fourth proportional to 93,485.40, 140,228.90 and 31,155.90 is: 46,734.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,485.40 : 140,228.90 = 31,155.90 : x
  2. Step 2: Convert to fraction form
    93,485.40/140,228.90 = 31,155.90/x
  3. Step 3: Cross multiply
    93,485.40x = 140,228.90 × 31,155.90
  4. Step 4: Simplify right side
    93,485.40x = 4,368,957,585.51
  5. Step 5: Solve for x
    x = 4,368,957,585.51/93,485.40
  6. Step 6: Final answer
    x = 46,734.12

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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.