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Finding the Fourth Proportional to 58,374, 87,538.32 and 18,921.60

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Solution

The fourth proportional to 58,374, 87,538.32 and 18,921.60 is: 28,375.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,374 : 87,538.32 = 18,921.60 : x
  2. Step 2: Convert to fraction form
    58,374/87,538.32 = 18,921.60/x
  3. Step 3: Cross multiply
    58,374x = 87,538.32 × 18,921.60
  4. Step 4: Simplify right side
    58,374x = 1,656,365,075.71
  5. Step 5: Solve for x
    x = 1,656,365,075.71/58,374
  6. Step 6: Final answer
    x = 28,375.05

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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.