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Finding the Fourth Proportional to 85,568.94, 128,366.10 and 29,423.52

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Solution

The fourth proportional to 85,568.94, 128,366.10 and 29,423.52 is: 44,139.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,568.94 : 128,366.10 = 29,423.52 : x
  2. Step 2: Convert to fraction form
    85,568.94/128,366.10 = 29,423.52/x
  3. Step 3: Cross multiply
    85,568.94x = 128,366.10 × 29,423.52
  4. Step 4: Simplify right side
    85,568.94x = 3,776,982,510.67
  5. Step 5: Solve for x
    x = 3,776,982,510.67/85,568.94
  6. Step 6: Final answer
    x = 44,139.64

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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.