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Finding the Fourth Proportional to 101,051.40, 139,461.33 and 64,283.11

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Solution

The fourth proportional to 101,051.40, 139,461.33 and 64,283.11 is: 88,717.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,051.40 : 139,461.33 = 64,283.11 : x
  2. Step 2: Convert to fraction form
    101,051.40/139,461.33 = 64,283.11/x
  3. Step 3: Cross multiply
    101,051.40x = 139,461.33 × 64,283.11
  4. Step 4: Simplify right side
    101,051.40x = 8,965,008,017.14
  5. Step 5: Solve for x
    x = 8,965,008,017.14/101,051.40
  6. Step 6: Final answer
    x = 88,717.31

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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.