Home / 73,821.24-101,878.80-42,000.40

Finding the Fourth Proportional to 73,821.24, 101,878.80 and 42,000.40

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Solution

The fourth proportional to 73,821.24, 101,878.80 and 42,000.40 is: 57,963.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,821.24 : 101,878.80 = 42,000.40 : x
  2. Step 2: Convert to fraction form
    73,821.24/101,878.80 = 42,000.40/x
  3. Step 3: Cross multiply
    73,821.24x = 101,878.80 × 42,000.40
  4. Step 4: Simplify right side
    73,821.24x = 4,278,950,351.52
  5. Step 5: Solve for x
    x = 4,278,950,351.52/73,821.24
  6. Step 6: Final answer
    x = 57,963.67

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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.