Home / 67,390.40-101,085.60-20,637.20

Finding the Fourth Proportional to 67,390.40, 101,085.60 and 20,637.20

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Solution

The fourth proportional to 67,390.40, 101,085.60 and 20,637.20 is: 30,955.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,390.40 : 101,085.60 = 20,637.20 : x
  2. Step 2: Convert to fraction form
    67,390.40/101,085.60 = 20,637.20/x
  3. Step 3: Cross multiply
    67,390.40x = 101,085.60 × 20,637.20
  4. Step 4: Simplify right side
    67,390.40x = 2,086,123,744.32
  5. Step 5: Solve for x
    x = 2,086,123,744.32/67,390.40
  6. Step 6: Final answer
    x = 30,955.80

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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.