Home / 74,328.72-102,580.74-42,491.58

Finding the Fourth Proportional to 74,328.72, 102,580.74 and 42,491.58

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Solution

The fourth proportional to 74,328.72, 102,580.74 and 42,491.58 is: 58,642.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,328.72 : 102,580.74 = 42,491.58 : x
  2. Step 2: Convert to fraction form
    74,328.72/102,580.74 = 42,491.58/x
  3. Step 3: Cross multiply
    74,328.72x = 102,580.74 × 42,491.58
  4. Step 4: Simplify right side
    74,328.72x = 4,358,817,720.17
  5. Step 5: Solve for x
    x = 4,358,817,720.17/74,328.72
  6. Step 6: Final answer
    x = 58,642.44

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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.