Home / 86,521.15-129,781.73-36,588.30

Finding the Fourth Proportional to 86,521.15, 129,781.73 and 36,588.30

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Solution

The fourth proportional to 86,521.15, 129,781.73 and 36,588.30 is: 54,882.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,521.15 : 129,781.73 = 36,588.30 : x
  2. Step 2: Convert to fraction form
    86,521.15/129,781.73 = 36,588.30/x
  3. Step 3: Cross multiply
    86,521.15x = 129,781.73 × 36,588.30
  4. Step 4: Simplify right side
    86,521.15x = 4,748,492,871.76
  5. Step 5: Solve for x
    x = 4,748,492,871.76/86,521.15
  6. Step 6: Final answer
    x = 54,882.45

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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.