Home / 42,750.90-64,130.00-11,165.16

Finding the Fourth Proportional to 42,750.90, 64,130.00 and 11,165.16

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Solution

The fourth proportional to 42,750.90, 64,130.00 and 11,165.16 is: 16,748.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,750.90 : 64,130.00 = 11,165.16 : x
  2. Step 2: Convert to fraction form
    42,750.90/64,130.00 = 11,165.16/x
  3. Step 3: Cross multiply
    42,750.90x = 64,130.00 × 11,165.16
  4. Step 4: Simplify right side
    42,750.90x = 716,021,654.97
  5. Step 5: Solve for x
    x = 716,021,654.97/42,750.90
  6. Step 6: Final answer
    x = 16,748.69

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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.