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Finding the Fourth Proportional to 89,366.40, 134,049.60 and 59,428.80

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Solution

The fourth proportional to 89,366.40, 134,049.60 and 59,428.80 is: 89,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,366.40 : 134,049.60 = 59,428.80 : x
  2. Step 2: Convert to fraction form
    89,366.40/134,049.60 = 59,428.80/x
  3. Step 3: Cross multiply
    89,366.40x = 134,049.60 × 59,428.80
  4. Step 4: Simplify right side
    89,366.40x = 7,966,406,868.48
  5. Step 5: Solve for x
    x = 7,966,406,868.48/89,366.40
  6. Step 6: Final answer
    x = 89,143.20

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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.