Home / 74,338.40-102,586.56-40,347.56

Finding the Fourth Proportional to 74,338.40, 102,586.56 and 40,347.56

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Solution

The fourth proportional to 74,338.40, 102,586.56 and 40,347.56 is: 55,679.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,338.40 : 102,586.56 = 40,347.56 : x
  2. Step 2: Convert to fraction form
    74,338.40/102,586.56 = 40,347.56/x
  3. Step 3: Cross multiply
    74,338.40x = 102,586.56 × 40,347.56
  4. Step 4: Simplify right side
    74,338.40x = 4,139,117,384.79
  5. Step 5: Solve for x
    x = 4,139,117,384.79/74,338.40
  6. Step 6: Final answer
    x = 55,679.40

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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.