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Finding the Fourth Proportional to 64,666.62, 89,284.14 and 40,477.32

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Solution

The fourth proportional to 64,666.62, 89,284.14 and 40,477.32 is: 55,886.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,666.62 : 89,284.14 = 40,477.32 : x
  2. Step 2: Convert to fraction form
    64,666.62/89,284.14 = 40,477.32/x
  3. Step 3: Cross multiply
    64,666.62x = 89,284.14 × 40,477.32
  4. Step 4: Simplify right side
    64,666.62x = 3,613,982,705.70
  5. Step 5: Solve for x
    x = 3,613,982,705.70/64,666.62
  6. Step 6: Final answer
    x = 55,886.37

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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.