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Finding the Fourth Proportional to 58,321.34, 87,495.90 and 18,878.45

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Solution

The fourth proportional to 58,321.34, 87,495.90 and 18,878.45 is: 28,322.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,321.34 : 87,495.90 = 18,878.45 : x
  2. Step 2: Convert to fraction form
    58,321.34/87,495.90 = 18,878.45/x
  3. Step 3: Cross multiply
    58,321.34x = 87,495.90 × 18,878.45
  4. Step 4: Simplify right side
    58,321.34x = 1,651,786,973.36
  5. Step 5: Solve for x
    x = 1,651,786,973.36/58,321.34
  6. Step 6: Final answer
    x = 28,322.17

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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.