Home / 105,708.40-145,877.50-57,962.54

Finding the Fourth Proportional to 105,708.40, 145,877.50 and 57,962.54

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Solution

The fourth proportional to 105,708.40, 145,877.50 and 57,962.54 is: 79,988.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,708.40 : 145,877.50 = 57,962.54 : x
  2. Step 2: Convert to fraction form
    105,708.40/145,877.50 = 57,962.54/x
  3. Step 3: Cross multiply
    105,708.40x = 145,877.50 × 57,962.54
  4. Step 4: Simplify right side
    105,708.40x = 8,455,430,428.85
  5. Step 5: Solve for x
    x = 8,455,430,428.85/105,708.40
  6. Step 6: Final answer
    x = 79,988.25

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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.