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Finding the Fourth Proportional to 60,018.80, 89,909.40 and 52,631.60

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Solution

The fourth proportional to 60,018.80, 89,909.40 and 52,631.60 is: 78,843.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,018.80 : 89,909.40 = 52,631.60 : x
  2. Step 2: Convert to fraction form
    60,018.80/89,909.40 = 52,631.60/x
  3. Step 3: Cross multiply
    60,018.80x = 89,909.40 × 52,631.60
  4. Step 4: Simplify right side
    60,018.80x = 4,732,075,577.04
  5. Step 5: Solve for x
    x = 4,732,075,577.04/60,018.80
  6. Step 6: Final answer
    x = 78,843.22

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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.