Home / 65,553.12-90,478.08-38,706.48

Finding the Fourth Proportional to 65,553.12, 90,478.08 and 38,706.48

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Solution

The fourth proportional to 65,553.12, 90,478.08 and 38,706.48 is: 53,423.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,553.12 : 90,478.08 = 38,706.48 : x
  2. Step 2: Convert to fraction form
    65,553.12/90,478.08 = 38,706.48/x
  3. Step 3: Cross multiply
    65,553.12x = 90,478.08 × 38,706.48
  4. Step 4: Simplify right side
    65,553.12x = 3,502,087,993.96
  5. Step 5: Solve for x
    x = 3,502,087,993.96/65,553.12
  6. Step 6: Final answer
    x = 53,423.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.