Home / 64,985.18-89,628.57-42,331.29

Finding the Fourth Proportional to 64,985.18, 89,628.57 and 42,331.29

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Solution

The fourth proportional to 64,985.18, 89,628.57 and 42,331.29 is: 58,383.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,985.18 : 89,628.57 = 42,331.29 : x
  2. Step 2: Convert to fraction form
    64,985.18/89,628.57 = 42,331.29/x
  3. Step 3: Cross multiply
    64,985.18x = 89,628.57 × 42,331.29
  4. Step 4: Simplify right side
    64,985.18x = 3,794,092,988.96
  5. Step 5: Solve for x
    x = 3,794,092,988.96/64,985.18
  6. Step 6: Final answer
    x = 58,383.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.