Home / 31,112.60-42,913.68-30,084.08

Finding the Fourth Proportional to 31,112.60, 42,913.68 and 30,084.08

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Solution

The fourth proportional to 31,112.60, 42,913.68 and 30,084.08 is: 41,495.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,112.60 : 42,913.68 = 30,084.08 : x
  2. Step 2: Convert to fraction form
    31,112.60/42,913.68 = 30,084.08/x
  3. Step 3: Cross multiply
    31,112.60x = 42,913.68 × 30,084.08
  4. Step 4: Simplify right side
    31,112.60x = 1,291,018,582.21
  5. Step 5: Solve for x
    x = 1,291,018,582.21/31,112.60
  6. Step 6: Final answer
    x = 41,495.04

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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.