Home / 72,346,107.60-108,519,161.40-66,803,374.80

Finding the Fourth Proportional to 72,346,107.60, 108,519,161.40 and 66,803,374.80

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Solution

The fourth proportional to 72,346,107.60, 108,519,161.40 and 66,803,374.80 is: 100,205,062.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,346,107.60 : 108,519,161.40 = 66,803,374.80 : x
  2. Step 2: Convert to fraction form
    72,346,107.60/108,519,161.40 = 66,803,374.80/x
  3. Step 3: Cross multiply
    72,346,107.60x = 108,519,161.40 × 66,803,374.80
  4. Step 4: Simplify right side
    72,346,107.60x = 7,249,446,211,985,893
  5. Step 5: Solve for x
    x = 7,249,446,211,985,893/72,346,107.60
  6. Step 6: Final answer
    x = 100,205,062.20

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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.