Home / 77,878.20-116,828.82-31,130.04

Finding the Fourth Proportional to 77,878.20, 116,828.82 and 31,130.04

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Solution

The fourth proportional to 77,878.20, 116,828.82 and 31,130.04 is: 46,699.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,878.20 : 116,828.82 = 31,130.04 : x
  2. Step 2: Convert to fraction form
    77,878.20/116,828.82 = 31,130.04/x
  3. Step 3: Cross multiply
    77,878.20x = 116,828.82 × 31,130.04
  4. Step 4: Simplify right side
    77,878.20x = 3,636,885,839.75
  5. Step 5: Solve for x
    x = 3,636,885,839.75/77,878.20
  6. Step 6: Final answer
    x = 46,699.66

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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.