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Finding the Fourth Proportional to 53,959.16, 80,962.10 and 28,970.04

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Solution

The fourth proportional to 53,959.16, 80,962.10 and 28,970.04 is: 43,467.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,959.16 : 80,962.10 = 28,970.04 : x
  2. Step 2: Convert to fraction form
    53,959.16/80,962.10 = 28,970.04/x
  3. Step 3: Cross multiply
    53,959.16x = 80,962.10 × 28,970.04
  4. Step 4: Simplify right side
    53,959.16x = 2,345,475,130.63
  5. Step 5: Solve for x
    x = 2,345,475,130.63/53,959.16
  6. Step 6: Final answer
    x = 43,467.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.