Home / 66,840.10-92,236.52-39,966.72

Finding the Fourth Proportional to 66,840.10, 92,236.52 and 39,966.72

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Solution

The fourth proportional to 66,840.10, 92,236.52 and 39,966.72 is: 55,152.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,840.10 : 92,236.52 = 39,966.72 : x
  2. Step 2: Convert to fraction form
    66,840.10/92,236.52 = 39,966.72/x
  3. Step 3: Cross multiply
    66,840.10x = 92,236.52 × 39,966.72
  4. Step 4: Simplify right side
    66,840.10x = 3,686,391,168.61
  5. Step 5: Solve for x
    x = 3,686,391,168.61/66,840.10
  6. Step 6: Final answer
    x = 55,152.39

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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.