Home / 78,037.40-107,692.26-45,791.30

Finding the Fourth Proportional to 78,037.40, 107,692.26 and 45,791.30

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Solution

The fourth proportional to 78,037.40, 107,692.26 and 45,791.30 is: 63,192.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,037.40 : 107,692.26 = 45,791.30 : x
  2. Step 2: Convert to fraction form
    78,037.40/107,692.26 = 45,791.30/x
  3. Step 3: Cross multiply
    78,037.40x = 107,692.26 × 45,791.30
  4. Step 4: Simplify right side
    78,037.40x = 4,931,368,585.34
  5. Step 5: Solve for x
    x = 4,931,368,585.34/78,037.40
  6. Step 6: Final answer
    x = 63,192.37

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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.