Home / 76,400.42-105,433.45-42,409.58

Finding the Fourth Proportional to 76,400.42, 105,433.45 and 42,409.58

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Solution

The fourth proportional to 76,400.42, 105,433.45 and 42,409.58 is: 58,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,400.42 : 105,433.45 = 42,409.58 : x
  2. Step 2: Convert to fraction form
    76,400.42/105,433.45 = 42,409.58/x
  3. Step 3: Cross multiply
    76,400.42x = 105,433.45 × 42,409.58
  4. Step 4: Simplify right side
    76,400.42x = 4,471,387,699.26
  5. Step 5: Solve for x
    x = 4,471,387,699.26/76,400.42
  6. Step 6: Final answer
    x = 58,525.70

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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.