Home / 71,984.16-99,337.47-39,719.07

Finding the Fourth Proportional to 71,984.16, 99,337.47 and 39,719.07

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Solution

The fourth proportional to 71,984.16, 99,337.47 and 39,719.07 is: 54,811.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,984.16 : 99,337.47 = 39,719.07 : x
  2. Step 2: Convert to fraction form
    71,984.16/99,337.47 = 39,719.07/x
  3. Step 3: Cross multiply
    71,984.16x = 99,337.47 × 39,719.07
  4. Step 4: Simplify right side
    71,984.16x = 3,945,592,023.95
  5. Step 5: Solve for x
    x = 3,945,592,023.95/71,984.16
  6. Step 6: Final answer
    x = 54,811.95

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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.