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Finding the Fourth Proportional to 85,341.47, 128,028.71 and 32,746.86

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Solution

The fourth proportional to 85,341.47, 128,028.71 and 32,746.86 is: 49,126.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,341.47 : 128,028.71 = 32,746.86 : x
  2. Step 2: Convert to fraction form
    85,341.47/128,028.71 = 32,746.86/x
  3. Step 3: Cross multiply
    85,341.47x = 128,028.71 × 32,746.86
  4. Step 4: Simplify right side
    85,341.47x = 4,192,538,324.22
  5. Step 5: Solve for x
    x = 4,192,538,324.22/85,341.47
  6. Step 6: Final answer
    x = 49,126.63

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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.