Home / 76,838.23-106,036.31-42,847.12

Finding the Fourth Proportional to 76,838.23, 106,036.31 and 42,847.12

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Solution

The fourth proportional to 76,838.23, 106,036.31 and 42,847.12 is: 59,128.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,838.23 : 106,036.31 = 42,847.12 : x
  2. Step 2: Convert to fraction form
    76,838.23/106,036.31 = 42,847.12/x
  3. Step 3: Cross multiply
    76,838.23x = 106,036.31 × 42,847.12
  4. Step 4: Simplify right side
    76,838.23x = 4,543,350,284.69
  5. Step 5: Solve for x
    x = 4,543,350,284.69/76,838.23
  6. Step 6: Final answer
    x = 59,128.77

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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.