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Finding the Fourth Proportional to 64,886.34, 89,551.74 and 38,039.40

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Solution

The fourth proportional to 64,886.34, 89,551.74 and 38,039.40 is: 52,499.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,886.34 : 89,551.74 = 38,039.40 : x
  2. Step 2: Convert to fraction form
    64,886.34/89,551.74 = 38,039.40/x
  3. Step 3: Cross multiply
    64,886.34x = 89,551.74 × 38,039.40
  4. Step 4: Simplify right side
    64,886.34x = 3,406,494,458.56
  5. Step 5: Solve for x
    x = 3,406,494,458.56/64,886.34
  6. Step 6: Final answer
    x = 52,499.41

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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.