Home / 56,302.08-77,692.80-31,152

Finding the Fourth Proportional to 56,302.08, 77,692.80 and 31,152

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Solution

The fourth proportional to 56,302.08, 77,692.80 and 31,152 is: 42,987.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,302.08 : 77,692.80 = 31,152 : x
  2. Step 2: Convert to fraction form
    56,302.08/77,692.80 = 31,152/x
  3. Step 3: Cross multiply
    56,302.08x = 77,692.80 × 31,152
  4. Step 4: Simplify right side
    56,302.08x = 2,420,286,105.60
  5. Step 5: Solve for x
    x = 2,420,286,105.60/56,302.08
  6. Step 6: Final answer
    x = 42,987.51

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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.