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Finding the Fourth Proportional to 105,503.56, 145,597.47 and 57,756.76

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Solution

The fourth proportional to 105,503.56, 145,597.47 and 57,756.76 is: 79,705.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,503.56 : 145,597.47 = 57,756.76 : x
  2. Step 2: Convert to fraction form
    105,503.56/145,597.47 = 57,756.76/x
  3. Step 3: Cross multiply
    105,503.56x = 145,597.47 × 57,756.76
  4. Step 4: Simplify right side
    105,503.56x = 8,409,237,403.41
  5. Step 5: Solve for x
    x = 8,409,237,403.41/105,503.56
  6. Step 6: Final answer
    x = 79,705.73

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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.