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Finding the Fourth Proportional to 65,306.95, 90,055.15 and 48,346.76

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Solution

The fourth proportional to 65,306.95, 90,055.15 and 48,346.76 is: 66,667.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,306.95 : 90,055.15 = 48,346.76 : x
  2. Step 2: Convert to fraction form
    65,306.95/90,055.15 = 48,346.76/x
  3. Step 3: Cross multiply
    65,306.95x = 90,055.15 × 48,346.76
  4. Step 4: Simplify right side
    65,306.95x = 4,353,874,723.81
  5. Step 5: Solve for x
    x = 4,353,874,723.81/65,306.95
  6. Step 6: Final answer
    x = 66,667.86

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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.