Home / 65,931.12-90,988.20-36,863.46

Finding the Fourth Proportional to 65,931.12, 90,988.20 and 36,863.46

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Solution

The fourth proportional to 65,931.12, 90,988.20 and 36,863.46 is: 50,873.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,931.12 : 90,988.20 = 36,863.46 : x
  2. Step 2: Convert to fraction form
    65,931.12/90,988.20 = 36,863.46/x
  3. Step 3: Cross multiply
    65,931.12x = 90,988.20 × 36,863.46
  4. Step 4: Simplify right side
    65,931.12x = 3,354,139,871.17
  5. Step 5: Solve for x
    x = 3,354,139,871.17/65,931.12
  6. Step 6: Final answer
    x = 50,873.39

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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.