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Finding the Fourth Proportional to 56,148.84, 77,485.54 and 30,655.24

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Solution

The fourth proportional to 56,148.84, 77,485.54 and 30,655.24 is: 42,304.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,148.84 : 77,485.54 = 30,655.24 : x
  2. Step 2: Convert to fraction form
    56,148.84/77,485.54 = 30,655.24/x
  3. Step 3: Cross multiply
    56,148.84x = 77,485.54 × 30,655.24
  4. Step 4: Simplify right side
    56,148.84x = 2,375,337,825.23
  5. Step 5: Solve for x
    x = 2,375,337,825.23/56,148.84
  6. Step 6: Final answer
    x = 42,304.31

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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.