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Finding the Fourth Proportional to 85,950.02, 128,190.31 and 75,488.87

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Solution

The fourth proportional to 85,950.02, 128,190.31 and 75,488.87 is: 112,588.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,950.02 : 128,190.31 = 75,488.87 : x
  2. Step 2: Convert to fraction form
    85,950.02/128,190.31 = 75,488.87/x
  3. Step 3: Cross multiply
    85,950.02x = 128,190.31 × 75,488.87
  4. Step 4: Simplify right side
    85,950.02x = 9,676,941,778.60
  5. Step 5: Solve for x
    x = 9,676,941,778.60/85,950.02
  6. Step 6: Final answer
    x = 112,588.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.