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Finding the Fourth Proportional to 58,219.80, 87,368.10 and 21,283.80

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Solution

The fourth proportional to 58,219.80, 87,368.10 and 21,283.80 is: 31,939.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,219.80 : 87,368.10 = 21,283.80 : x
  2. Step 2: Convert to fraction form
    58,219.80/87,368.10 = 21,283.80/x
  3. Step 3: Cross multiply
    58,219.80x = 87,368.10 × 21,283.80
  4. Step 4: Simplify right side
    58,219.80x = 1,859,525,166.78
  5. Step 5: Solve for x
    x = 1,859,525,166.78/58,219.80
  6. Step 6: Final answer
    x = 31,939.74

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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.