Home / 85,473.20-128,211.45-26,308.81

Finding the Fourth Proportional to 85,473.20, 128,211.45 and 26,308.81

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Solution

The fourth proportional to 85,473.20, 128,211.45 and 26,308.81 is: 39,463.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,473.20 : 128,211.45 = 26,308.81 : x
  2. Step 2: Convert to fraction form
    85,473.20/128,211.45 = 26,308.81/x
  3. Step 3: Cross multiply
    85,473.20x = 128,211.45 × 26,308.81
  4. Step 4: Simplify right side
    85,473.20x = 3,373,090,677.87
  5. Step 5: Solve for x
    x = 3,373,090,677.87/85,473.20
  6. Step 6: Final answer
    x = 39,463.72

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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.