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Finding the Fourth Proportional to 61,989.84, 85,428 and 44,964.72

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Solution

The fourth proportional to 61,989.84, 85,428 and 44,964.72 is: 61,965.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,989.84 : 85,428 = 44,964.72 : x
  2. Step 2: Convert to fraction form
    61,989.84/85,428 = 44,964.72/x
  3. Step 3: Cross multiply
    61,989.84x = 85,428 × 44,964.72
  4. Step 4: Simplify right side
    61,989.84x = 3,841,246,100.16
  5. Step 5: Solve for x
    x = 3,841,246,100.16/61,989.84
  6. Step 6: Final answer
    x = 61,965.74

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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.