Home / 61,664.88-85,039.77-40,931.70

Finding the Fourth Proportional to 61,664.88, 85,039.77 and 40,931.70

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Solution

The fourth proportional to 61,664.88, 85,039.77 and 40,931.70 is: 56,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,664.88 : 85,039.77 = 40,931.70 : x
  2. Step 2: Convert to fraction form
    61,664.88/85,039.77 = 40,931.70/x
  3. Step 3: Cross multiply
    61,664.88x = 85,039.77 × 40,931.70
  4. Step 4: Simplify right side
    61,664.88x = 3,480,822,353.71
  5. Step 5: Solve for x
    x = 3,480,822,353.71/61,664.88
  6. Step 6: Final answer
    x = 56,447.40

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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.