Home / 105,435.48-145,486.62-62,985

Finding the Fourth Proportional to 105,435.48, 145,486.62 and 62,985

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Solution

The fourth proportional to 105,435.48, 145,486.62 and 62,985 is: 86,910.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,435.48 : 145,486.62 = 62,985 : x
  2. Step 2: Convert to fraction form
    105,435.48/145,486.62 = 62,985/x
  3. Step 3: Cross multiply
    105,435.48x = 145,486.62 × 62,985
  4. Step 4: Simplify right side
    105,435.48x = 9,163,474,760.70
  5. Step 5: Solve for x
    x = 9,163,474,760.70/105,435.48
  6. Step 6: Final answer
    x = 86,910.73

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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.