Home / 53,729.64-74,142.56-31,070.10

Finding the Fourth Proportional to 53,729.64, 74,142.56 and 31,070.10

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Solution

The fourth proportional to 53,729.64, 74,142.56 and 31,070.10 is: 42,874.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,729.64 : 74,142.56 = 31,070.10 : x
  2. Step 2: Convert to fraction form
    53,729.64/74,142.56 = 31,070.10/x
  3. Step 3: Cross multiply
    53,729.64x = 74,142.56 × 31,070.10
  4. Step 4: Simplify right side
    53,729.64x = 2,303,616,753.46
  5. Step 5: Solve for x
    x = 2,303,616,753.46/53,729.64
  6. Step 6: Final answer
    x = 42,874.23

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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.