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Finding the Fourth Proportional to 56,242.08, 77,611.04 and 31,090.08

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Solution

The fourth proportional to 56,242.08, 77,611.04 and 31,090.08 is: 42,902.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,242.08 : 77,611.04 = 31,090.08 : x
  2. Step 2: Convert to fraction form
    56,242.08/77,611.04 = 31,090.08/x
  3. Step 3: Cross multiply
    56,242.08x = 77,611.04 × 31,090.08
  4. Step 4: Simplify right side
    56,242.08x = 2,412,933,442.48
  5. Step 5: Solve for x
    x = 2,412,933,442.48/56,242.08
  6. Step 6: Final answer
    x = 42,902.64

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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.