Home / 66,000.89-91,074.47-40,508.31

Finding the Fourth Proportional to 66,000.89, 91,074.47 and 40,508.31

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Solution

The fourth proportional to 66,000.89, 91,074.47 and 40,508.31 is: 55,897.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,000.89 : 91,074.47 = 40,508.31 : x
  2. Step 2: Convert to fraction form
    66,000.89/91,074.47 = 40,508.31/x
  3. Step 3: Cross multiply
    66,000.89x = 91,074.47 × 40,508.31
  4. Step 4: Simplify right side
    66,000.89x = 3,689,272,661.30
  5. Step 5: Solve for x
    x = 3,689,272,661.30/66,000.89
  6. Step 6: Final answer
    x = 55,897.32

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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.