Home / 77,237.10-115,709.85-39,669.30

Finding the Fourth Proportional to 77,237.10, 115,709.85 and 39,669.30

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Solution

The fourth proportional to 77,237.10, 115,709.85 and 39,669.30 is: 59,429.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,237.10 : 115,709.85 = 39,669.30 : x
  2. Step 2: Convert to fraction form
    77,237.10/115,709.85 = 39,669.30/x
  3. Step 3: Cross multiply
    77,237.10x = 115,709.85 × 39,669.30
  4. Step 4: Simplify right side
    77,237.10x = 4,590,128,752.61
  5. Step 5: Solve for x
    x = 4,590,128,752.61/77,237.10
  6. Step 6: Final answer
    x = 59,429.07

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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.