Home / 51,553.20-77,329.80-38,431.20

Finding the Fourth Proportional to 51,553.20, 77,329.80 and 38,431.20

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Solution

The fourth proportional to 51,553.20, 77,329.80 and 38,431.20 is: 57,646.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,553.20 : 77,329.80 = 38,431.20 : x
  2. Step 2: Convert to fraction form
    51,553.20/77,329.80 = 38,431.20/x
  3. Step 3: Cross multiply
    51,553.20x = 77,329.80 × 38,431.20
  4. Step 4: Simplify right side
    51,553.20x = 2,971,877,009.76
  5. Step 5: Solve for x
    x = 2,971,877,009.76/51,553.20
  6. Step 6: Final answer
    x = 57,646.80

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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.