Home / 66,118.16-91,216.68-42,238.64

Finding the Fourth Proportional to 66,118.16, 91,216.68 and 42,238.64

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Solution

The fourth proportional to 66,118.16, 91,216.68 and 42,238.64 is: 58,272.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,118.16 : 91,216.68 = 42,238.64 : x
  2. Step 2: Convert to fraction form
    66,118.16/91,216.68 = 42,238.64/x
  3. Step 3: Cross multiply
    66,118.16x = 91,216.68 × 42,238.64
  4. Step 4: Simplify right side
    66,118.16x = 3,852,868,508.52
  5. Step 5: Solve for x
    x = 3,852,868,508.52/66,118.16
  6. Step 6: Final answer
    x = 58,272.47

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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.