Home / 86,685.04-129,819.76-47,144.08

Finding the Fourth Proportional to 86,685.04, 129,819.76 and 47,144.08

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Solution

The fourth proportional to 86,685.04, 129,819.76 and 47,144.08 is: 70,603.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,685.04 : 129,819.76 = 47,144.08 : x
  2. Step 2: Convert to fraction form
    86,685.04/129,819.76 = 47,144.08/x
  3. Step 3: Cross multiply
    86,685.04x = 129,819.76 × 47,144.08
  4. Step 4: Simplify right side
    86,685.04x = 6,120,233,151.02
  5. Step 5: Solve for x
    x = 6,120,233,151.02/86,685.04
  6. Step 6: Final answer
    x = 70,603.11

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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.