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Finding the Fourth Proportional to 64,370.56, 88,862.40 and 40,508.80

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Solution

The fourth proportional to 64,370.56, 88,862.40 and 40,508.80 is: 55,921.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,370.56 : 88,862.40 = 40,508.80 : x
  2. Step 2: Convert to fraction form
    64,370.56/88,862.40 = 40,508.80/x
  3. Step 3: Cross multiply
    64,370.56x = 88,862.40 × 40,508.80
  4. Step 4: Simplify right side
    64,370.56x = 3,599,709,189.12
  5. Step 5: Solve for x
    x = 3,599,709,189.12/64,370.56
  6. Step 6: Final answer
    x = 55,921.67

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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.