Home / 31,347,103.60-47,020,655.40-21,143,436.40

Finding the Fourth Proportional to 31,347,103.60, 47,020,655.40 and 21,143,436.40

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Solution

The fourth proportional to 31,347,103.60, 47,020,655.40 and 21,143,436.40 is: 31,715,154.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,347,103.60 : 47,020,655.40 = 21,143,436.40 : x
  2. Step 2: Convert to fraction form
    31,347,103.60/47,020,655.40 = 21,143,436.40/x
  3. Step 3: Cross multiply
    31,347,103.60x = 47,020,655.40 × 21,143,436.40
  4. Step 4: Simplify right side
    31,347,103.60x = 994,178,236,936,216.50
  5. Step 5: Solve for x
    x = 994,178,236,936,216.50/31,347,103.60
  6. Step 6: Final answer
    x = 31,715,154.60

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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.