Home / 66,623.12-91,896.52-42,711.92

Finding the Fourth Proportional to 66,623.12, 91,896.52 and 42,711.92

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Solution

The fourth proportional to 66,623.12, 91,896.52 and 42,711.92 is: 58,914.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,623.12 : 91,896.52 = 42,711.92 : x
  2. Step 2: Convert to fraction form
    66,623.12/91,896.52 = 42,711.92/x
  3. Step 3: Cross multiply
    66,623.12x = 91,896.52 × 42,711.92
  4. Step 4: Simplify right side
    66,623.12x = 3,925,076,810.52
  5. Step 5: Solve for x
    x = 3,925,076,810.52/66,623.12
  6. Step 6: Final answer
    x = 58,914.64

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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.