Home / 78,026.69-107,646.20-45,315.54

Finding the Fourth Proportional to 78,026.69, 107,646.20 and 45,315.54

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Solution

The fourth proportional to 78,026.69, 107,646.20 and 45,315.54 is: 62,517.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,026.69 : 107,646.20 = 45,315.54 : x
  2. Step 2: Convert to fraction form
    78,026.69/107,646.20 = 45,315.54/x
  3. Step 3: Cross multiply
    78,026.69x = 107,646.20 × 45,315.54
  4. Step 4: Simplify right side
    78,026.69x = 4,878,045,299.54
  5. Step 5: Solve for x
    x = 4,878,045,299.54/78,026.69
  6. Step 6: Final answer
    x = 62,517.65

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1.5x scale

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.