Home / 74,298.78-102,532.50-42,486.30

Finding the Fourth Proportional to 74,298.78, 102,532.50 and 42,486.30

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Solution

The fourth proportional to 74,298.78, 102,532.50 and 42,486.30 is: 58,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,298.78 : 102,532.50 = 42,486.30 : x
  2. Step 2: Convert to fraction form
    74,298.78/102,532.50 = 42,486.30/x
  3. Step 3: Cross multiply
    74,298.78x = 102,532.50 × 42,486.30
  4. Step 4: Simplify right side
    74,298.78x = 4,356,226,554.75
  5. Step 5: Solve for x
    x = 4,356,226,554.75/74,298.78
  6. Step 6: Final answer
    x = 58,631.20

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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.