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Finding the Fourth Proportional to 53,649.94, 74,019.80 and 30,985.96

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Solution

The fourth proportional to 53,649.94, 74,019.80 and 30,985.96 is: 42,750.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,649.94 : 74,019.80 = 30,985.96 : x
  2. Step 2: Convert to fraction form
    53,649.94/74,019.80 = 30,985.96/x
  3. Step 3: Cross multiply
    53,649.94x = 74,019.80 × 30,985.96
  4. Step 4: Simplify right side
    53,649.94x = 2,293,574,562.01
  5. Step 5: Solve for x
    x = 2,293,574,562.01/53,649.94
  6. Step 6: Final answer
    x = 42,750.74

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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.