Home / 77,435.38-115,965.50-39,384.53

Finding the Fourth Proportional to 77,435.38, 115,965.50 and 39,384.53

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Solution

The fourth proportional to 77,435.38, 115,965.50 and 39,384.53 is: 58,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,435.38 : 115,965.50 = 39,384.53 : x
  2. Step 2: Convert to fraction form
    77,435.38/115,965.50 = 39,384.53/x
  3. Step 3: Cross multiply
    77,435.38x = 115,965.50 × 39,384.53
  4. Step 4: Simplify right side
    77,435.38x = 4,567,246,806.71
  5. Step 5: Solve for x
    x = 4,567,246,806.71/77,435.38
  6. Step 6: Final answer
    x = 58,981.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.