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Finding the Fourth Proportional to 47,129.90, 65,040.51 and 25,621.10

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Solution

The fourth proportional to 47,129.90, 65,040.51 and 25,621.10 is: 35,357.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,129.90 : 65,040.51 = 25,621.10 : x
  2. Step 2: Convert to fraction form
    47,129.90/65,040.51 = 25,621.10/x
  3. Step 3: Cross multiply
    47,129.90x = 65,040.51 × 25,621.10
  4. Step 4: Simplify right side
    47,129.90x = 1,666,409,085.56
  5. Step 5: Solve for x
    x = 1,666,409,085.56/47,129.90
  6. Step 6: Final answer
    x = 35,357.79

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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.