Home / 86,136.81-129,214.93-39,377.13

Finding the Fourth Proportional to 86,136.81, 129,214.93 and 39,377.13

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Solution

The fourth proportional to 86,136.81, 129,214.93 and 39,377.13 is: 59,070.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,136.81 : 129,214.93 = 39,377.13 : x
  2. Step 2: Convert to fraction form
    86,136.81/129,214.93 = 39,377.13/x
  3. Step 3: Cross multiply
    86,136.81x = 129,214.93 × 39,377.13
  4. Step 4: Simplify right side
    86,136.81x = 5,088,113,096.55
  5. Step 5: Solve for x
    x = 5,088,113,096.55/86,136.81
  6. Step 6: Final answer
    x = 59,070.14

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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.