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Finding the Fourth Proportional to 60,387.58, 90,537.63 and 30,420.28

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Solution

The fourth proportional to 60,387.58, 90,537.63 and 30,420.28 is: 45,608.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,387.58 : 90,537.63 = 30,420.28 : x
  2. Step 2: Convert to fraction form
    60,387.58/90,537.63 = 30,420.28/x
  3. Step 3: Cross multiply
    60,387.58x = 90,537.63 × 30,420.28
  4. Step 4: Simplify right side
    60,387.58x = 2,754,180,055.14
  5. Step 5: Solve for x
    x = 2,754,180,055.14/60,387.58
  6. Step 6: Final answer
    x = 45,608.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.