Home / 72,079.78-99,566.13-57,985.78

Finding the Fourth Proportional to 72,079.78, 99,566.13 and 57,985.78

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Solution

The fourth proportional to 72,079.78, 99,566.13 and 57,985.78 is: 80,097.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,079.78 : 99,566.13 = 57,985.78 : x
  2. Step 2: Convert to fraction form
    72,079.78/99,566.13 = 57,985.78/x
  3. Step 3: Cross multiply
    72,079.78x = 99,566.13 × 57,985.78
  4. Step 4: Simplify right side
    72,079.78x = 5,773,419,709.63
  5. Step 5: Solve for x
    x = 5,773,419,709.63/72,079.78
  6. Step 6: Final answer
    x = 80,097.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.