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Finding the Fourth Proportional to 78,763.68, 108,692.28 and 42,953.94

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Solution

The fourth proportional to 78,763.68, 108,692.28 and 42,953.94 is: 59,275.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,763.68 : 108,692.28 = 42,953.94 : x
  2. Step 2: Convert to fraction form
    78,763.68/108,692.28 = 42,953.94/x
  3. Step 3: Cross multiply
    78,763.68x = 108,692.28 × 42,953.94
  4. Step 4: Simplify right side
    78,763.68x = 4,668,761,673.58
  5. Step 5: Solve for x
    x = 4,668,761,673.58/78,763.68
  6. Step 6: Final answer
    x = 59,275.57

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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.