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Finding the Fourth Proportional to 93,112.80, 139,622.40 and 45,731.04

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Solution

The fourth proportional to 93,112.80, 139,622.40 and 45,731.04 is: 68,573.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,112.80 : 139,622.40 = 45,731.04 : x
  2. Step 2: Convert to fraction form
    93,112.80/139,622.40 = 45,731.04/x
  3. Step 3: Cross multiply
    93,112.80x = 139,622.40 × 45,731.04
  4. Step 4: Simplify right side
    93,112.80x = 6,385,077,559.30
  5. Step 5: Solve for x
    x = 6,385,077,559.30/93,112.80
  6. Step 6: Final answer
    x = 68,573.57

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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.