Home / 105,476.48-145,551.95-57,720.60

Finding the Fourth Proportional to 105,476.48, 145,551.95 and 57,720.60

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Solution

The fourth proportional to 105,476.48, 145,551.95 and 57,720.60 is: 79,651.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,476.48 : 145,551.95 = 57,720.60 : x
  2. Step 2: Convert to fraction form
    105,476.48/145,551.95 = 57,720.60/x
  3. Step 3: Cross multiply
    105,476.48x = 145,551.95 × 57,720.60
  4. Step 4: Simplify right side
    105,476.48x = 8,401,346,137.70
  5. Step 5: Solve for x
    x = 8,401,346,137.70/105,476.48
  6. Step 6: Final answer
    x = 79,651.37

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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.