Home / 66,403.12-91,633.63-36,187.79

Finding the Fourth Proportional to 66,403.12, 91,633.63 and 36,187.79

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Solution

The fourth proportional to 66,403.12, 91,633.63 and 36,187.79 is: 49,937.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,403.12 : 91,633.63 = 36,187.79 : x
  2. Step 2: Convert to fraction form
    66,403.12/91,633.63 = 36,187.79/x
  3. Step 3: Cross multiply
    66,403.12x = 91,633.63 × 36,187.79
  4. Step 4: Simplify right side
    66,403.12x = 3,316,018,559.38
  5. Step 5: Solve for x
    x = 3,316,018,559.38/66,403.12
  6. Step 6: Final answer
    x = 49,937.69

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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.