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Finding the Fourth Proportional to 65,507.80, 90,389.70 and 36,823.67

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Solution

The fourth proportional to 65,507.80, 90,389.70 and 36,823.67 is: 50,810.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,507.80 : 90,389.70 = 36,823.67 : x
  2. Step 2: Convert to fraction form
    65,507.80/90,389.70 = 36,823.67/x
  3. Step 3: Cross multiply
    65,507.80x = 90,389.70 × 36,823.67
  4. Step 4: Simplify right side
    65,507.80x = 3,328,480,484.20
  5. Step 5: Solve for x
    x = 3,328,480,484.20/65,507.80
  6. Step 6: Final answer
    x = 50,810.45

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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.