Home / 45,030.60-67,456.80-39,490.20

Finding the Fourth Proportional to 45,030.60, 67,456.80 and 39,490.20

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Solution

The fourth proportional to 45,030.60, 67,456.80 and 39,490.20 is: 59,157.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,030.60 : 67,456.80 = 39,490.20 : x
  2. Step 2: Convert to fraction form
    45,030.60/67,456.80 = 39,490.20/x
  3. Step 3: Cross multiply
    45,030.60x = 67,456.80 × 39,490.20
  4. Step 4: Simplify right side
    45,030.60x = 2,663,882,523.36
  5. Step 5: Solve for x
    x = 2,663,882,523.36/45,030.60
  6. Step 6: Final answer
    x = 59,157.16

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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.