Home / 51,783.40-77,561.28-42,796.90

Finding the Fourth Proportional to 51,783.40, 77,561.28 and 42,796.90

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Solution

The fourth proportional to 51,783.40, 77,561.28 and 42,796.90 is: 64,101.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,783.40 : 77,561.28 = 42,796.90 : x
  2. Step 2: Convert to fraction form
    51,783.40/77,561.28 = 42,796.90/x
  3. Step 3: Cross multiply
    51,783.40x = 77,561.28 × 42,796.90
  4. Step 4: Simplify right side
    51,783.40x = 3,319,382,344.03
  5. Step 5: Solve for x
    x = 3,319,382,344.03/51,783.40
  6. Step 6: Final answer
    x = 64,101.28

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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.