Home / 90,438.76-124,813.38-52,712.20

Finding the Fourth Proportional to 90,438.76, 124,813.38 and 52,712.20

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Solution

The fourth proportional to 90,438.76, 124,813.38 and 52,712.20 is: 72,747.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,438.76 : 124,813.38 = 52,712.20 : x
  2. Step 2: Convert to fraction form
    90,438.76/124,813.38 = 52,712.20/x
  3. Step 3: Cross multiply
    90,438.76x = 124,813.38 × 52,712.20
  4. Step 4: Simplify right side
    90,438.76x = 6,579,187,849.24
  5. Step 5: Solve for x
    x = 6,579,187,849.24/90,438.76
  6. Step 6: Final answer
    x = 72,747.44

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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.