Home / 74,422.40-102,703.63-40,431.15

Finding the Fourth Proportional to 74,422.40, 102,703.63 and 40,431.15

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Solution

The fourth proportional to 74,422.40, 102,703.63 and 40,431.15 is: 55,795.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,422.40 : 102,703.63 = 40,431.15 : x
  2. Step 2: Convert to fraction form
    74,422.40/102,703.63 = 40,431.15/x
  3. Step 3: Cross multiply
    74,422.40x = 102,703.63 × 40,431.15
  4. Step 4: Simplify right side
    74,422.40x = 4,152,425,870.07
  5. Step 5: Solve for x
    x = 4,152,425,870.07/74,422.40
  6. Step 6: Final answer
    x = 55,795.38

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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.