Home / 70,237.48-105,340.62-20,306.68

Finding the Fourth Proportional to 70,237.48, 105,340.62 and 20,306.68

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Solution

The fourth proportional to 70,237.48, 105,340.62 and 20,306.68 is: 30,455.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,237.48 : 105,340.62 = 20,306.68 : x
  2. Step 2: Convert to fraction form
    70,237.48/105,340.62 = 20,306.68/x
  3. Step 3: Cross multiply
    70,237.48x = 105,340.62 × 20,306.68
  4. Step 4: Simplify right side
    70,237.48x = 2,139,118,261.34
  5. Step 5: Solve for x
    x = 2,139,118,261.34/70,237.48
  6. Step 6: Final answer
    x = 30,455.51

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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.