Home / 92,864.22-128,149.03-50,421.78

Finding the Fourth Proportional to 92,864.22, 128,149.03 and 50,421.78

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Solution

The fourth proportional to 92,864.22, 128,149.03 and 50,421.78 is: 69,580.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,864.22 : 128,149.03 = 50,421.78 : x
  2. Step 2: Convert to fraction form
    92,864.22/128,149.03 = 50,421.78/x
  3. Step 3: Cross multiply
    92,864.22x = 128,149.03 × 50,421.78
  4. Step 4: Simplify right side
    92,864.22x = 6,461,501,625.39
  5. Step 5: Solve for x
    x = 6,461,501,625.39/92,864.22
  6. Step 6: Final answer
    x = 69,580.10

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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.