Home / 85,510.12-128,267.16-29,349.76

Finding the Fourth Proportional to 85,510.12, 128,267.16 and 29,349.76

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Solution

The fourth proportional to 85,510.12, 128,267.16 and 29,349.76 is: 44,025.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,510.12 : 128,267.16 = 29,349.76 : x
  2. Step 2: Convert to fraction form
    85,510.12/128,267.16 = 29,349.76/x
  3. Step 3: Cross multiply
    85,510.12x = 128,267.16 × 29,349.76
  4. Step 4: Simplify right side
    85,510.12x = 3,764,610,361.88
  5. Step 5: Solve for x
    x = 3,764,610,361.88/85,510.12
  6. Step 6: Final answer
    x = 44,025.32

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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.