Home / 75,780.77-113,541.75-42,480.05

Finding the Fourth Proportional to 75,780.77, 113,541.75 and 42,480.05

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Solution

The fourth proportional to 75,780.77, 113,541.75 and 42,480.05 is: 63,647.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,780.77 : 113,541.75 = 42,480.05 : x
  2. Step 2: Convert to fraction form
    75,780.77/113,541.75 = 42,480.05/x
  3. Step 3: Cross multiply
    75,780.77x = 113,541.75 × 42,480.05
  4. Step 4: Simplify right side
    75,780.77x = 4,823,258,649.38
  5. Step 5: Solve for x
    x = 4,823,258,649.38/75,780.77
  6. Step 6: Final answer
    x = 63,647.53

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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.