Home / 45,643.10-68,464.65-42,143.90

Finding the Fourth Proportional to 45,643.10, 68,464.65 and 42,143.90

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Solution

The fourth proportional to 45,643.10, 68,464.65 and 42,143.90 is: 63,215.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,643.10 : 68,464.65 = 42,143.90 : x
  2. Step 2: Convert to fraction form
    45,643.10/68,464.65 = 42,143.90/x
  3. Step 3: Cross multiply
    45,643.10x = 68,464.65 × 42,143.90
  4. Step 4: Simplify right side
    45,643.10x = 2,885,367,363.14
  5. Step 5: Solve for x
    x = 2,885,367,363.14/45,643.10
  6. Step 6: Final answer
    x = 63,215.85

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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.