Home / 42,478.40-63,640.80-37,563.20

Finding the Fourth Proportional to 42,478.40, 63,640.80 and 37,563.20

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Solution

The fourth proportional to 42,478.40, 63,640.80 and 37,563.20 is: 56,276.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,478.40 : 63,640.80 = 37,563.20 : x
  2. Step 2: Convert to fraction form
    42,478.40/63,640.80 = 37,563.20/x
  3. Step 3: Cross multiply
    42,478.40x = 63,640.80 × 37,563.20
  4. Step 4: Simplify right side
    42,478.40x = 2,390,552,098.56
  5. Step 5: Solve for x
    x = 2,390,552,098.56/42,478.40
  6. Step 6: Final answer
    x = 56,276.89

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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.