Home / 90,688.10-136,079.40-43,356.56

Finding the Fourth Proportional to 90,688.10, 136,079.40 and 43,356.56

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Solution

The fourth proportional to 90,688.10, 136,079.40 and 43,356.56 is: 65,057.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,688.10 : 136,079.40 = 43,356.56 : x
  2. Step 2: Convert to fraction form
    90,688.10/136,079.40 = 43,356.56/x
  3. Step 3: Cross multiply
    90,688.10x = 136,079.40 × 43,356.56
  4. Step 4: Simplify right side
    90,688.10x = 5,899,934,670.86
  5. Step 5: Solve for x
    x = 5,899,934,670.86/90,688.10
  6. Step 6: Final answer
    x = 65,057.43

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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.