Home / 74,205.12-102,403.20-40,671.36

Finding the Fourth Proportional to 74,205.12, 102,403.20 and 40,671.36

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Solution

The fourth proportional to 74,205.12, 102,403.20 and 40,671.36 is: 56,126.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,205.12 : 102,403.20 = 40,671.36 : x
  2. Step 2: Convert to fraction form
    74,205.12/102,403.20 = 40,671.36/x
  3. Step 3: Cross multiply
    74,205.12x = 102,403.20 × 40,671.36
  4. Step 4: Simplify right side
    74,205.12x = 4,164,877,412.35
  5. Step 5: Solve for x
    x = 4,164,877,412.35/74,205.12
  6. Step 6: Final answer
    x = 56,126.55

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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.