Home / 42,686.03-64,032.17-16,390.78

Finding the Fourth Proportional to 42,686.03, 64,032.17 and 16,390.78

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Solution

The fourth proportional to 42,686.03, 64,032.17 and 16,390.78 is: 24,587.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,686.03 : 64,032.17 = 16,390.78 : x
  2. Step 2: Convert to fraction form
    42,686.03/64,032.17 = 16,390.78/x
  3. Step 3: Cross multiply
    42,686.03x = 64,032.17 × 16,390.78
  4. Step 4: Simplify right side
    42,686.03x = 1,049,536,969.36
  5. Step 5: Solve for x
    x = 1,049,536,969.36/42,686.03
  6. Step 6: Final answer
    x = 24,587.36

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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.