Home / 42,619.60-63,929.40-40,675.60

Finding the Fourth Proportional to 42,619.60, 63,929.40 and 40,675.60

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Solution

The fourth proportional to 42,619.60, 63,929.40 and 40,675.60 is: 61,013.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,619.60 : 63,929.40 = 40,675.60 : x
  2. Step 2: Convert to fraction form
    42,619.60/63,929.40 = 40,675.60/x
  3. Step 3: Cross multiply
    42,619.60x = 63,929.40 × 40,675.60
  4. Step 4: Simplify right side
    42,619.60x = 2,600,366,702.64
  5. Step 5: Solve for x
    x = 2,600,366,702.64/42,619.60
  6. Step 6: Final answer
    x = 61,013.40

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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.