Home / 86,011.04-129,031.68-39,268.64

Finding the Fourth Proportional to 86,011.04, 129,031.68 and 39,268.64

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Solution

The fourth proportional to 86,011.04, 129,031.68 and 39,268.64 is: 58,909.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,011.04 : 129,031.68 = 39,268.64 : x
  2. Step 2: Convert to fraction form
    86,011.04/129,031.68 = 39,268.64/x
  3. Step 3: Cross multiply
    86,011.04x = 129,031.68 × 39,268.64
  4. Step 4: Simplify right side
    86,011.04x = 5,066,898,590.52
  5. Step 5: Solve for x
    x = 5,066,898,590.52/86,011.04
  6. Step 6: Final answer
    x = 58,909.86

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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.