Home / 75,865.40-113,538.90-66,534.20

Finding the Fourth Proportional to 75,865.40, 113,538.90 and 66,534.20

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Solution

The fourth proportional to 75,865.40, 113,538.90 and 66,534.20 is: 99,573.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,865.40 : 113,538.90 = 66,534.20 : x
  2. Step 2: Convert to fraction form
    75,865.40/113,538.90 = 66,534.20/x
  3. Step 3: Cross multiply
    75,865.40x = 113,538.90 × 66,534.20
  4. Step 4: Simplify right side
    75,865.40x = 7,554,219,880.38
  5. Step 5: Solve for x
    x = 7,554,219,880.38/75,865.40
  6. Step 6: Final answer
    x = 99,573.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.