Home / 70,237.40-105,340.28-20,306.39

Finding the Fourth Proportional to 70,237.40, 105,340.28 and 20,306.39

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Solution

The fourth proportional to 70,237.40, 105,340.28 and 20,306.39 is: 30,455.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,237.40 : 105,340.28 = 20,306.39 : x
  2. Step 2: Convert to fraction form
    70,237.40/105,340.28 = 20,306.39/x
  3. Step 3: Cross multiply
    70,237.40x = 105,340.28 × 20,306.39
  4. Step 4: Simplify right side
    70,237.40x = 2,139,080,180.16
  5. Step 5: Solve for x
    x = 2,139,080,180.16/70,237.40
  6. Step 6: Final answer
    x = 30,455.00

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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.