Home / 74,259.71-102,478.64-40,268.18

Finding the Fourth Proportional to 74,259.71, 102,478.64 and 40,268.18

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Solution

The fourth proportional to 74,259.71, 102,478.64 and 40,268.18 is: 55,570.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,259.71 : 102,478.64 = 40,268.18 : x
  2. Step 2: Convert to fraction form
    74,259.71/102,478.64 = 40,268.18/x
  3. Step 3: Cross multiply
    74,259.71x = 102,478.64 × 40,268.18
  4. Step 4: Simplify right side
    74,259.71x = 4,126,627,809.28
  5. Step 5: Solve for x
    x = 4,126,627,809.28/74,259.71
  6. Step 6: Final answer
    x = 55,570.21

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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.