Home / 42,885.15-64,339.26-17,916.90

Finding the Fourth Proportional to 42,885.15, 64,339.26 and 17,916.90

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Solution

The fourth proportional to 42,885.15, 64,339.26 and 17,916.90 is: 26,880.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,885.15 : 64,339.26 = 17,916.90 : x
  2. Step 2: Convert to fraction form
    42,885.15/64,339.26 = 17,916.90/x
  3. Step 3: Cross multiply
    42,885.15x = 64,339.26 × 17,916.90
  4. Step 4: Simplify right side
    42,885.15x = 1,152,760,087.49
  5. Step 5: Solve for x
    x = 1,152,760,087.49/42,885.15
  6. Step 6: Final answer
    x = 26,880.17

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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.