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Finding the Fourth Proportional to 78,037.65, 107,692.61 and 45,791.55

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Solution

The fourth proportional to 78,037.65, 107,692.61 and 45,791.55 is: 63,192.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,037.65 : 107,692.61 = 45,791.55 : x
  2. Step 2: Convert to fraction form
    78,037.65/107,692.61 = 45,791.55/x
  3. Step 3: Cross multiply
    78,037.65x = 107,692.61 × 45,791.55
  4. Step 4: Simplify right side
    78,037.65x = 4,931,411,306.49
  5. Step 5: Solve for x
    x = 4,931,411,306.49/78,037.65
  6. Step 6: Final answer
    x = 63,192.72

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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.