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Finding the Fourth Proportional to 29,070.16, 40,129.01 and 19,651.48

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Solution

The fourth proportional to 29,070.16, 40,129.01 and 19,651.48 is: 27,127.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,070.16 : 40,129.01 = 19,651.48 : x
  2. Step 2: Convert to fraction form
    29,070.16/40,129.01 = 19,651.48/x
  3. Step 3: Cross multiply
    29,070.16x = 40,129.01 × 19,651.48
  4. Step 4: Simplify right side
    29,070.16x = 788,594,437.43
  5. Step 5: Solve for x
    x = 788,594,437.43/29,070.16
  6. Step 6: Final answer
    x = 27,127.28

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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.