Home / 76,500.59-105,568.72-42,508.21

Finding the Fourth Proportional to 76,500.59, 105,568.72 and 42,508.21

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Solution

The fourth proportional to 76,500.59, 105,568.72 and 42,508.21 is: 58,660.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,500.59 : 105,568.72 = 42,508.21 : x
  2. Step 2: Convert to fraction form
    76,500.59/105,568.72 = 42,508.21/x
  3. Step 3: Cross multiply
    76,500.59x = 105,568.72 × 42,508.21
  4. Step 4: Simplify right side
    76,500.59x = 4,487,537,319.19
  5. Step 5: Solve for x
    x = 4,487,537,319.19/76,500.59
  6. Step 6: Final answer
    x = 58,660.17

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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.