Home / 105,588.48-145,712.56-57,840.80

Finding the Fourth Proportional to 105,588.48, 145,712.56 and 57,840.80

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Solution

The fourth proportional to 105,588.48, 145,712.56 and 57,840.80 is: 79,820.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,588.48 : 145,712.56 = 57,840.80 : x
  2. Step 2: Convert to fraction form
    105,588.48/145,712.56 = 57,840.80/x
  3. Step 3: Cross multiply
    105,588.48x = 145,712.56 × 57,840.80
  4. Step 4: Simplify right side
    105,588.48x = 8,428,131,040.45
  5. Step 5: Solve for x
    x = 8,428,131,040.45/105,588.48
  6. Step 6: Final answer
    x = 79,820.55

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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.