Home / 74,145.02-102,321.78-42,313.28

Finding the Fourth Proportional to 74,145.02, 102,321.78 and 42,313.28

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Solution

The fourth proportional to 74,145.02, 102,321.78 and 42,313.28 is: 58,393.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,145.02 : 102,321.78 = 42,313.28 : x
  2. Step 2: Convert to fraction form
    74,145.02/102,321.78 = 42,313.28/x
  3. Step 3: Cross multiply
    74,145.02x = 102,321.78 × 42,313.28
  4. Step 4: Simplify right side
    74,145.02x = 4,329,570,127.24
  5. Step 5: Solve for x
    x = 4,329,570,127.24/74,145.02
  6. Step 6: Final answer
    x = 58,393.27

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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.