Home / 59,990.48-90,040.56-30,428.72

Finding the Fourth Proportional to 59,990.48, 90,040.56 and 30,428.72

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Solution

The fourth proportional to 59,990.48, 90,040.56 and 30,428.72 is: 45,670.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,990.48 : 90,040.56 = 30,428.72 : x
  2. Step 2: Convert to fraction form
    59,990.48/90,040.56 = 30,428.72/x
  3. Step 3: Cross multiply
    59,990.48x = 90,040.56 × 30,428.72
  4. Step 4: Simplify right side
    59,990.48x = 2,739,818,988.88
  5. Step 5: Solve for x
    x = 2,739,818,988.88/59,990.48
  6. Step 6: Final answer
    x = 45,670.90

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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.