Home / 42,165.54-63,248.40-28,978.02

Finding the Fourth Proportional to 42,165.54, 63,248.40 and 28,978.02

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Solution

The fourth proportional to 42,165.54, 63,248.40 and 28,978.02 is: 43,467.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,165.54 : 63,248.40 = 28,978.02 : x
  2. Step 2: Convert to fraction form
    42,165.54/63,248.40 = 28,978.02/x
  3. Step 3: Cross multiply
    42,165.54x = 63,248.40 × 28,978.02
  4. Step 4: Simplify right side
    42,165.54x = 1,832,813,400.17
  5. Step 5: Solve for x
    x = 1,832,813,400.17/42,165.54
  6. Step 6: Final answer
    x = 43,467.09

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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.