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Finding the Fourth Proportional to 76,792.41, 105,969.11 and 42,799.77

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Solution

The fourth proportional to 76,792.41, 105,969.11 and 42,799.77 is: 59,061.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,792.41 : 105,969.11 = 42,799.77 : x
  2. Step 2: Convert to fraction form
    76,792.41/105,969.11 = 42,799.77/x
  3. Step 3: Cross multiply
    76,792.41x = 105,969.11 × 42,799.77
  4. Step 4: Simplify right side
    76,792.41x = 4,535,453,321.11
  5. Step 5: Solve for x
    x = 4,535,453,321.11/76,792.41
  6. Step 6: Final answer
    x = 59,061.22

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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.