Home / 105,708.90-145,878.21-57,963.02

Finding the Fourth Proportional to 105,708.90, 145,878.21 and 57,963.02

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Solution

The fourth proportional to 105,708.90, 145,878.21 and 57,963.02 is: 79,988.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,708.90 : 145,878.21 = 57,963.02 : x
  2. Step 2: Convert to fraction form
    105,708.90/145,878.21 = 57,963.02/x
  3. Step 3: Cross multiply
    105,708.90x = 145,878.21 × 57,963.02
  4. Step 4: Simplify right side
    105,708.90x = 8,455,541,603.79
  5. Step 5: Solve for x
    x = 8,455,541,603.79/105,708.90
  6. Step 6: Final answer
    x = 79,988.93

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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.