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Finding the Fourth Proportional to 105,548.01, 145,655.10 and 57,798.51

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Solution

The fourth proportional to 105,548.01, 145,655.10 and 57,798.51 is: 79,761.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,548.01 : 145,655.10 = 57,798.51 : x
  2. Step 2: Convert to fraction form
    105,548.01/145,655.10 = 57,798.51/x
  3. Step 3: Cross multiply
    105,548.01x = 145,655.10 × 57,798.51
  4. Step 4: Simplify right side
    105,548.01x = 8,418,647,753.90
  5. Step 5: Solve for x
    x = 8,418,647,753.90/105,548.01
  6. Step 6: Final answer
    x = 79,761.31

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1.5x scale

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.