Home / 42,865.10-64,301.88-14,781.45

Finding the Fourth Proportional to 42,865.10, 64,301.88 and 14,781.45

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Solution

The fourth proportional to 42,865.10, 64,301.88 and 14,781.45 is: 22,173.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,865.10 : 64,301.88 = 14,781.45 : x
  2. Step 2: Convert to fraction form
    42,865.10/64,301.88 = 14,781.45/x
  3. Step 3: Cross multiply
    42,865.10x = 64,301.88 × 14,781.45
  4. Step 4: Simplify right side
    42,865.10x = 950,475,320.69
  5. Step 5: Solve for x
    x = 950,475,320.69/42,865.10
  6. Step 6: Final answer
    x = 22,173.64

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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.