Home / 81,490.16-112,456.04-45,680.20

Finding the Fourth Proportional to 81,490.16, 112,456.04 and 45,680.20

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Solution

The fourth proportional to 81,490.16, 112,456.04 and 45,680.20 is: 63,038.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,490.16 : 112,456.04 = 45,680.20 : x
  2. Step 2: Convert to fraction form
    81,490.16/112,456.04 = 45,680.20/x
  3. Step 3: Cross multiply
    81,490.16x = 112,456.04 × 45,680.20
  4. Step 4: Simplify right side
    81,490.16x = 5,137,014,398.41
  5. Step 5: Solve for x
    x = 5,137,014,398.41/81,490.16
  6. Step 6: Final answer
    x = 63,038.46

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1.5x scale

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.