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Finding the Fourth Proportional to 66,689.60, 92,043.96 and 42,846.08

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Solution

The fourth proportional to 66,689.60, 92,043.96 and 42,846.08 is: 59,135.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,689.60 : 92,043.96 = 42,846.08 : x
  2. Step 2: Convert to fraction form
    66,689.60/92,043.96 = 42,846.08/x
  3. Step 3: Cross multiply
    66,689.60x = 92,043.96 × 42,846.08
  4. Step 4: Simplify right side
    66,689.60x = 3,943,722,873.68
  5. Step 5: Solve for x
    x = 3,943,722,873.68/66,689.60
  6. Step 6: Final answer
    x = 59,135.50

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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.