Home / 76,890.12-106,108.38-43,356.12

Finding the Fourth Proportional to 76,890.12, 106,108.38 and 43,356.12

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Solution

The fourth proportional to 76,890.12, 106,108.38 and 43,356.12 is: 59,831.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,890.12 : 106,108.38 = 43,356.12 : x
  2. Step 2: Convert to fraction form
    76,890.12/106,108.38 = 43,356.12/x
  3. Step 3: Cross multiply
    76,890.12x = 106,108.38 × 43,356.12
  4. Step 4: Simplify right side
    76,890.12x = 4,600,447,656.29
  5. Step 5: Solve for x
    x = 4,600,447,656.29/76,890.12
  6. Step 6: Final answer
    x = 59,831.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.