Home / 86,404.24-129,313.62-53,145.40

Finding the Fourth Proportional to 86,404.24, 129,313.62 and 53,145.40

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Solution

The fourth proportional to 86,404.24, 129,313.62 and 53,145.40 is: 79,538.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,404.24 : 129,313.62 = 53,145.40 : x
  2. Step 2: Convert to fraction form
    86,404.24/129,313.62 = 53,145.40/x
  3. Step 3: Cross multiply
    86,404.24x = 129,313.62 × 53,145.40
  4. Step 4: Simplify right side
    86,404.24x = 6,872,424,060.35
  5. Step 5: Solve for x
    x = 6,872,424,060.35/86,404.24
  6. Step 6: Final answer
    x = 79,538.04

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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.