Home / 105,573.12-145,739.52-62,549.76

Finding the Fourth Proportional to 105,573.12, 145,739.52 and 62,549.76

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Solution

The fourth proportional to 105,573.12, 145,739.52 and 62,549.76 is: 86,347.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,573.12 : 145,739.52 = 62,549.76 : x
  2. Step 2: Convert to fraction form
    105,573.12/145,739.52 = 62,549.76/x
  3. Step 3: Cross multiply
    105,573.12x = 145,739.52 × 62,549.76
  4. Step 4: Simplify right side
    105,573.12x = 9,115,971,998.52
  5. Step 5: Solve for x
    x = 9,115,971,998.52/105,573.12
  6. Step 6: Final answer
    x = 86,347.47

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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.