Home / 42,442.05-63,621.36-18,762.51

Finding the Fourth Proportional to 42,442.05, 63,621.36 and 18,762.51

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Solution

The fourth proportional to 42,442.05, 63,621.36 and 18,762.51 is: 28,125.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,442.05 : 63,621.36 = 18,762.51 : x
  2. Step 2: Convert to fraction form
    42,442.05/63,621.36 = 18,762.51/x
  3. Step 3: Cross multiply
    42,442.05x = 63,621.36 × 18,762.51
  4. Step 4: Simplify right side
    42,442.05x = 1,193,696,403.21
  5. Step 5: Solve for x
    x = 1,193,696,403.21/42,442.05
  6. Step 6: Final answer
    x = 28,125.32

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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.