Home / 42,999.49-64,488.30-16,689.88

Finding the Fourth Proportional to 42,999.49, 64,488.30 and 16,689.88

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Solution

The fourth proportional to 42,999.49, 64,488.30 and 16,689.88 is: 25,030.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,999.49 : 64,488.30 = 16,689.88 : x
  2. Step 2: Convert to fraction form
    42,999.49/64,488.30 = 16,689.88/x
  3. Step 3: Cross multiply
    42,999.49x = 64,488.30 × 16,689.88
  4. Step 4: Simplify right side
    42,999.49x = 1,076,301,988.40
  5. Step 5: Solve for x
    x = 1,076,301,988.40/42,999.49
  6. Step 6: Final answer
    x = 25,030.58

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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.