Home / 57,438.84-86,168.16-17,985.72

Finding the Fourth Proportional to 57,438.84, 86,168.16 and 17,985.72

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Solution

The fourth proportional to 57,438.84, 86,168.16 and 17,985.72 is: 26,981.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,438.84 : 86,168.16 = 17,985.72 : x
  2. Step 2: Convert to fraction form
    57,438.84/86,168.16 = 17,985.72/x
  3. Step 3: Cross multiply
    57,438.84x = 86,168.16 × 17,985.72
  4. Step 4: Simplify right side
    57,438.84x = 1,549,796,398.68
  5. Step 5: Solve for x
    x = 1,549,796,398.68/57,438.84
  6. Step 6: Final answer
    x = 26,981.68

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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.