Home / 74,205.60-102,403.50-40,215.06

Finding the Fourth Proportional to 74,205.60, 102,403.50 and 40,215.06

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Solution

The fourth proportional to 74,205.60, 102,403.50 and 40,215.06 is: 55,496.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,205.60 : 102,403.50 = 40,215.06 : x
  2. Step 2: Convert to fraction form
    74,205.60/102,403.50 = 40,215.06/x
  3. Step 3: Cross multiply
    74,205.60x = 102,403.50 × 40,215.06
  4. Step 4: Simplify right side
    74,205.60x = 4,118,162,896.71
  5. Step 5: Solve for x
    x = 4,118,162,896.71/74,205.60
  6. Step 6: Final answer
    x = 55,496.66

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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.