Home / 85,692.04-128,555.42-30,326.92

Finding the Fourth Proportional to 85,692.04, 128,555.42 and 30,326.92

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Solution

The fourth proportional to 85,692.04, 128,555.42 and 30,326.92 is: 45,496.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,692.04 : 128,555.42 = 30,326.92 : x
  2. Step 2: Convert to fraction form
    85,692.04/128,555.42 = 30,326.92/x
  3. Step 3: Cross multiply
    85,692.04x = 128,555.42 × 30,326.92
  4. Step 4: Simplify right side
    85,692.04x = 3,898,689,937.91
  5. Step 5: Solve for x
    x = 3,898,689,937.91/85,692.04
  6. Step 6: Final answer
    x = 45,496.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.