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Finding the Fourth Proportional to 75,857.40, 113,526.90 and 66,526.20

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Solution

The fourth proportional to 75,857.40, 113,526.90 and 66,526.20 is: 99,561.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,857.40 : 113,526.90 = 66,526.20 : x
  2. Step 2: Convert to fraction form
    75,857.40/113,526.90 = 66,526.20/x
  3. Step 3: Cross multiply
    75,857.40x = 113,526.90 × 66,526.20
  4. Step 4: Simplify right side
    75,857.40x = 7,552,513,254.78
  5. Step 5: Solve for x
    x = 7,552,513,254.78/75,857.40
  6. Step 6: Final answer
    x = 99,561.98

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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.