Home / 31,506,978.80-47,260,468.20-12,331,362.80

Finding the Fourth Proportional to 31,506,978.80, 47,260,468.20 and 12,331,362.80

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Solution

The fourth proportional to 31,506,978.80, 47,260,468.20 and 12,331,362.80 is: 18,497,044.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,506,978.80 : 47,260,468.20 = 12,331,362.80 : x
  2. Step 2: Convert to fraction form
    31,506,978.80/47,260,468.20 = 12,331,362.80/x
  3. Step 3: Cross multiply
    31,506,978.80x = 47,260,468.20 × 12,331,362.80
  4. Step 4: Simplify right side
    31,506,978.80x = 582,785,979,472,063
  5. Step 5: Solve for x
    x = 582,785,979,472,063/31,506,978.80
  6. Step 6: Final answer
    x = 18,497,044.20

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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.