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Finding the Fourth Proportional to 55,762,582.80, 83,648,021.40 and 19,856,125.20

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Solution

The fourth proportional to 55,762,582.80, 83,648,021.40 and 19,856,125.20 is: 29,785,664.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,762,582.80 : 83,648,021.40 = 19,856,125.20 : x
  2. Step 2: Convert to fraction form
    55,762,582.80/83,648,021.40 = 19,856,125.20/x
  3. Step 3: Cross multiply
    55,762,582.80x = 83,648,021.40 × 19,856,125.20
  4. Step 4: Simplify right side
    55,762,582.80x = 1,660,925,585,650,679.25
  5. Step 5: Solve for x
    x = 1,660,925,585,650,679.25/55,762,582.80
  6. Step 6: Final answer
    x = 29,785,664.55

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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.