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Finding the Fourth Proportional to 64,009.80, 96,129.90 and 61,936.20

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Solution

The fourth proportional to 64,009.80, 96,129.90 and 61,936.20 is: 93,015.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,009.80 : 96,129.90 = 61,936.20 : x
  2. Step 2: Convert to fraction form
    64,009.80/96,129.90 = 61,936.20/x
  3. Step 3: Cross multiply
    64,009.80x = 96,129.90 × 61,936.20
  4. Step 4: Simplify right side
    64,009.80x = 5,953,920,712.38
  5. Step 5: Solve for x
    x = 5,953,920,712.38/64,009.80
  6. Step 6: Final answer
    x = 93,015.77

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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.