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Finding the Fourth Proportional to 64,128.80, 88,501.20 and 37,258.40

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Solution

The fourth proportional to 64,128.80, 88,501.20 and 37,258.40 is: 51,418.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,128.80 : 88,501.20 = 37,258.40 : x
  2. Step 2: Convert to fraction form
    64,128.80/88,501.20 = 37,258.40/x
  3. Step 3: Cross multiply
    64,128.80x = 88,501.20 × 37,258.40
  4. Step 4: Simplify right side
    64,128.80x = 3,297,413,110.08
  5. Step 5: Solve for x
    x = 3,297,413,110.08/64,128.80
  6. Step 6: Final answer
    x = 51,418.60

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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.