Home / 74,505.19-102,817.70-40,513.63

Finding the Fourth Proportional to 74,505.19, 102,817.70 and 40,513.63

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Solution

The fourth proportional to 74,505.19, 102,817.70 and 40,513.63 is: 55,909.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,505.19 : 102,817.70 = 40,513.63 : x
  2. Step 2: Convert to fraction form
    74,505.19/102,817.70 = 40,513.63/x
  3. Step 3: Cross multiply
    74,505.19x = 102,817.70 × 40,513.63
  4. Step 4: Simplify right side
    74,505.19x = 4,165,518,255.25
  5. Step 5: Solve for x
    x = 4,165,518,255.25/74,505.19
  6. Step 6: Final answer
    x = 55,909.10

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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.