Home / 53,649.80-74,019.56-30,985.78

Finding the Fourth Proportional to 53,649.80, 74,019.56 and 30,985.78

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Solution

The fourth proportional to 53,649.80, 74,019.56 and 30,985.78 is: 42,750.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,649.80 : 74,019.56 = 30,985.78 : x
  2. Step 2: Convert to fraction form
    53,649.80/74,019.56 = 30,985.78/x
  3. Step 3: Cross multiply
    53,649.80x = 74,019.56 × 30,985.78
  4. Step 4: Simplify right side
    53,649.80x = 2,293,553,801.86
  5. Step 5: Solve for x
    x = 2,293,553,801.86/53,649.80
  6. Step 6: Final answer
    x = 42,750.46

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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.