Home / 39,918.40-55,111.44-35,490.40

Finding the Fourth Proportional to 39,918.40, 55,111.44 and 35,490.40

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Solution

The fourth proportional to 39,918.40, 55,111.44 and 35,490.40 is: 48,998.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,918.40 : 55,111.44 = 35,490.40 : x
  2. Step 2: Convert to fraction form
    39,918.40/55,111.44 = 35,490.40/x
  3. Step 3: Cross multiply
    39,918.40x = 55,111.44 × 35,490.40
  4. Step 4: Simplify right side
    39,918.40x = 1,955,927,050.18
  5. Step 5: Solve for x
    x = 1,955,927,050.18/39,918.40
  6. Step 6: Final answer
    x = 48,998.13

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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.