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Finding the Fourth Proportional to 55,990,909.80, 83,986,364.70 and 15,601,393.80

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Solution

The fourth proportional to 55,990,909.80, 83,986,364.70 and 15,601,393.80 is: 23,402,090.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,990,909.80 : 83,986,364.70 = 15,601,393.80 : x
  2. Step 2: Convert to fraction form
    55,990,909.80/83,986,364.70 = 15,601,393.80/x
  3. Step 3: Cross multiply
    55,990,909.80x = 83,986,364.70 × 15,601,393.80
  4. Step 4: Simplify right side
    55,990,909.80x = 1,310,304,349,515,119
  5. Step 5: Solve for x
    x = 1,310,304,349,515,119/55,990,909.80
  6. Step 6: Final answer
    x = 23,402,090.70

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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.