Home / 76,310.29-105,309.14-42,319.25

Finding the Fourth Proportional to 76,310.29, 105,309.14 and 42,319.25

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Solution

The fourth proportional to 76,310.29, 105,309.14 and 42,319.25 is: 58,401.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,310.29 : 105,309.14 = 42,319.25 : x
  2. Step 2: Convert to fraction form
    76,310.29/105,309.14 = 42,319.25/x
  3. Step 3: Cross multiply
    76,310.29x = 105,309.14 × 42,319.25
  4. Step 4: Simplify right side
    76,310.29x = 4,456,603,822.95
  5. Step 5: Solve for x
    x = 4,456,603,822.95/76,310.29
  6. Step 6: Final answer
    x = 58,401.09

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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.