Home / 53,640.16-74,032.32-31,284.16

Finding the Fourth Proportional to 53,640.16, 74,032.32 and 31,284.16

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Solution

The fourth proportional to 53,640.16, 74,032.32 and 31,284.16 is: 43,177.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,640.16 : 74,032.32 = 31,284.16 : x
  2. Step 2: Convert to fraction form
    53,640.16/74,032.32 = 31,284.16/x
  3. Step 3: Cross multiply
    53,640.16x = 74,032.32 × 31,284.16
  4. Step 4: Simplify right side
    53,640.16x = 2,316,038,944.05
  5. Step 5: Solve for x
    x = 2,316,038,944.05/53,640.16
  6. Step 6: Final answer
    x = 43,177.33

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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.