Home / 66,720.64-92,086.84-42,877.12

Finding the Fourth Proportional to 66,720.64, 92,086.84 and 42,877.12

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Solution

The fourth proportional to 66,720.64, 92,086.84 and 42,877.12 is: 59,178.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,720.64 : 92,086.84 = 42,877.12 : x
  2. Step 2: Convert to fraction form
    66,720.64/92,086.84 = 42,877.12/x
  3. Step 3: Cross multiply
    66,720.64x = 92,086.84 × 42,877.12
  4. Step 4: Simplify right side
    66,720.64x = 3,948,418,489.10
  5. Step 5: Solve for x
    x = 3,948,418,489.10/66,720.64
  6. Step 6: Final answer
    x = 59,178.37

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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.