Home / 76,799.81-105,984.21-42,810.46

Finding the Fourth Proportional to 76,799.81, 105,984.21 and 42,810.46

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Solution

The fourth proportional to 76,799.81, 105,984.21 and 42,810.46 is: 59,078.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,799.81 : 105,984.21 = 42,810.46 : x
  2. Step 2: Convert to fraction form
    76,799.81/105,984.21 = 42,810.46/x
  3. Step 3: Cross multiply
    76,799.81x = 105,984.21 × 42,810.46
  4. Step 4: Simplify right side
    76,799.81x = 4,537,232,252.92
  5. Step 5: Solve for x
    x = 4,537,232,252.92/76,799.81
  6. Step 6: Final answer
    x = 59,078.69

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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.