Home / 105,487.41-145,572.81-57,743.79

Finding the Fourth Proportional to 105,487.41, 145,572.81 and 57,743.79

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Solution

The fourth proportional to 105,487.41, 145,572.81 and 57,743.79 is: 79,686.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,487.41 : 145,572.81 = 57,743.79 : x
  2. Step 2: Convert to fraction form
    105,487.41/145,572.81 = 57,743.79/x
  3. Step 3: Cross multiply
    105,487.41x = 145,572.81 × 57,743.79
  4. Step 4: Simplify right side
    105,487.41x = 8,405,925,770.35
  5. Step 5: Solve for x
    x = 8,405,925,770.35/105,487.41
  6. Step 6: Final answer
    x = 79,686.53

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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.