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Finding the Fourth Proportional to 84,605.80, 126,908.70 and 58,340.20

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Solution

The fourth proportional to 84,605.80, 126,908.70 and 58,340.20 is: 87,510.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,605.80 : 126,908.70 = 58,340.20 : x
  2. Step 2: Convert to fraction form
    84,605.80/126,908.70 = 58,340.20/x
  3. Step 3: Cross multiply
    84,605.80x = 126,908.70 × 58,340.20
  4. Step 4: Simplify right side
    84,605.80x = 7,403,878,939.74
  5. Step 5: Solve for x
    x = 7,403,878,939.74/84,605.80
  6. Step 6: Final answer
    x = 87,510.30

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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.