Home / 74,511.12-102,823.28-40,977.12

Finding the Fourth Proportional to 74,511.12, 102,823.28 and 40,977.12

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Solution

The fourth proportional to 74,511.12, 102,823.28 and 40,977.12 is: 56,547.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,511.12 : 102,823.28 = 40,977.12 : x
  2. Step 2: Convert to fraction form
    74,511.12/102,823.28 = 40,977.12/x
  3. Step 3: Cross multiply
    74,511.12x = 102,823.28 × 40,977.12
  4. Step 4: Simplify right side
    74,511.12x = 4,213,401,883.35
  5. Step 5: Solve for x
    x = 4,213,401,883.35/74,511.12
  6. Step 6: Final answer
    x = 56,547.29

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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.