Home / 72,710.06-109,065.29-39,445.79

Finding the Fourth Proportional to 72,710.06, 109,065.29 and 39,445.79

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Solution

The fourth proportional to 72,710.06, 109,065.29 and 39,445.79 is: 59,168.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,710.06 : 109,065.29 = 39,445.79 : x
  2. Step 2: Convert to fraction form
    72,710.06/109,065.29 = 39,445.79/x
  3. Step 3: Cross multiply
    72,710.06x = 109,065.29 × 39,445.79
  4. Step 4: Simplify right side
    72,710.06x = 4,302,165,783.07
  5. Step 5: Solve for x
    x = 4,302,165,783.07/72,710.06
  6. Step 6: Final answer
    x = 59,168.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.