Home / 76,400.76-105,432.68-42,409.66

Finding the Fourth Proportional to 76,400.76, 105,432.68 and 42,409.66

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Solution

The fourth proportional to 76,400.76, 105,432.68 and 42,409.66 is: 58,525.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,400.76 : 105,432.68 = 42,409.66 : x
  2. Step 2: Convert to fraction form
    76,400.76/105,432.68 = 42,409.66/x
  3. Step 3: Cross multiply
    76,400.76x = 105,432.68 × 42,409.66
  4. Step 4: Simplify right side
    76,400.76x = 4,471,364,111.69
  5. Step 5: Solve for x
    x = 4,471,364,111.69/76,400.76
  6. Step 6: Final answer
    x = 58,525.13

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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.