Home / 85,938.70-128,877.16-29,763.69

Finding the Fourth Proportional to 85,938.70, 128,877.16 and 29,763.69

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Solution

The fourth proportional to 85,938.70, 128,877.16 and 29,763.69 is: 44,634.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,938.70 : 128,877.16 = 29,763.69 : x
  2. Step 2: Convert to fraction form
    85,938.70/128,877.16 = 29,763.69/x
  3. Step 3: Cross multiply
    85,938.70x = 128,877.16 × 29,763.69
  4. Step 4: Simplify right side
    85,938.70x = 3,835,859,838.32
  5. Step 5: Solve for x
    x = 3,835,859,838.32/85,938.70
  6. Step 6: Final answer
    x = 44,634.84

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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.