Home / 103,405.86-142,756.88-62,577.60

Finding the Fourth Proportional to 103,405.86, 142,756.88 and 62,577.60

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Solution

The fourth proportional to 103,405.86, 142,756.88 and 62,577.60 is: 86,391.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,405.86 : 142,756.88 = 62,577.60 : x
  2. Step 2: Convert to fraction form
    103,405.86/142,756.88 = 62,577.60/x
  3. Step 3: Cross multiply
    103,405.86x = 142,756.88 × 62,577.60
  4. Step 4: Simplify right side
    103,405.86x = 8,933,382,621
  5. Step 5: Solve for x
    x = 8,933,382,621/103,405.86
  6. Step 6: Final answer
    x = 86,391.45

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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.