Home / 85,597.85-128,327.20-35,715.12

Finding the Fourth Proportional to 85,597.85, 128,327.20 and 35,715.12

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Solution

The fourth proportional to 85,597.85, 128,327.20 and 35,715.12 is: 53,543.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,597.85 : 128,327.20 = 35,715.12 : x
  2. Step 2: Convert to fraction form
    85,597.85/128,327.20 = 35,715.12/x
  3. Step 3: Cross multiply
    85,597.85x = 128,327.20 × 35,715.12
  4. Step 4: Simplify right side
    85,597.85x = 4,583,221,347.26
  5. Step 5: Solve for x
    x = 4,583,221,347.26/85,597.85
  6. Step 6: Final answer
    x = 53,543.65

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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.