Home / 78,649.13-117,933.57-26,039.63

Finding the Fourth Proportional to 78,649.13, 117,933.57 and 26,039.63

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Solution

The fourth proportional to 78,649.13, 117,933.57 and 26,039.63 is: 39,046.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,649.13 : 117,933.57 = 26,039.63 : x
  2. Step 2: Convert to fraction form
    78,649.13/117,933.57 = 26,039.63/x
  3. Step 3: Cross multiply
    78,649.13x = 117,933.57 × 26,039.63
  4. Step 4: Simplify right side
    78,649.13x = 3,070,945,937.71
  5. Step 5: Solve for x
    x = 3,070,945,937.71/78,649.13
  6. Step 6: Final answer
    x = 39,046.16

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1.5x scale

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.