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Finding the Fourth Proportional to 61,728.48, 85,154.76 and 37,812.96

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Solution

The fourth proportional to 61,728.48, 85,154.76 and 37,812.96 is: 52,163.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,728.48 : 85,154.76 = 37,812.96 : x
  2. Step 2: Convert to fraction form
    61,728.48/85,154.76 = 37,812.96/x
  3. Step 3: Cross multiply
    61,728.48x = 85,154.76 × 37,812.96
  4. Step 4: Simplify right side
    61,728.48x = 3,219,953,533.69
  5. Step 5: Solve for x
    x = 3,219,953,533.69/61,728.48
  6. Step 6: Final answer
    x = 52,163.18

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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.