Home / 76,795.68-105,985.80-42,809.70

Finding the Fourth Proportional to 76,795.68, 105,985.80 and 42,809.70

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Solution

The fourth proportional to 76,795.68, 105,985.80 and 42,809.70 is: 59,081.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,795.68 : 105,985.80 = 42,809.70 : x
  2. Step 2: Convert to fraction form
    76,795.68/105,985.80 = 42,809.70/x
  3. Step 3: Cross multiply
    76,795.68x = 105,985.80 × 42,809.70
  4. Step 4: Simplify right side
    76,795.68x = 4,537,220,302.26
  5. Step 5: Solve for x
    x = 4,537,220,302.26/76,795.68
  6. Step 6: Final answer
    x = 59,081.71

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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.