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Finding the Fourth Proportional to 64,509.62, 88,918.93 and 48,128.99

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Solution

The fourth proportional to 64,509.62, 88,918.93 and 48,128.99 is: 66,340.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,509.62 : 88,918.93 = 48,128.99 : x
  2. Step 2: Convert to fraction form
    64,509.62/88,918.93 = 48,128.99/x
  3. Step 3: Cross multiply
    64,509.62x = 88,918.93 × 48,128.99
  4. Step 4: Simplify right side
    64,509.62x = 4,279,578,292.78
  5. Step 5: Solve for x
    x = 4,279,578,292.78/64,509.62
  6. Step 6: Final answer
    x = 66,340.16

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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.