Home / 74,860,811.40-112,291,217.10-21,008,123.40

Finding the Fourth Proportional to 74,860,811.40, 112,291,217.10 and 21,008,123.40

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Solution

The fourth proportional to 74,860,811.40, 112,291,217.10 and 21,008,123.40 is: 31,512,185.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,860,811.40 : 112,291,217.10 = 21,008,123.40 : x
  2. Step 2: Convert to fraction form
    74,860,811.40/112,291,217.10 = 21,008,123.40/x
  3. Step 3: Cross multiply
    74,860,811.40x = 112,291,217.10 × 21,008,123.40
  4. Step 4: Simplify right side
    74,860,811.40x = 2,359,027,745,572,990
  5. Step 5: Solve for x
    x = 2,359,027,745,572,990/74,860,811.40
  6. Step 6: Final answer
    x = 31,512,185.10

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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.