Home / 80,695,541.60-121,043,312.40-71,121,730.40

Finding the Fourth Proportional to 80,695,541.60, 121,043,312.40 and 71,121,730.40

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Solution

The fourth proportional to 80,695,541.60, 121,043,312.40 and 71,121,730.40 is: 106,682,595.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,695,541.60 : 121,043,312.40 = 71,121,730.40 : x
  2. Step 2: Convert to fraction form
    80,695,541.60/121,043,312.40 = 71,121,730.40/x
  3. Step 3: Cross multiply
    80,695,541.60x = 121,043,312.40 × 71,121,730.40
  4. Step 4: Simplify right side
    80,695,541.60x = 8,608,809,831,235,778
  5. Step 5: Solve for x
    x = 8,608,809,831,235,778/80,695,541.60
  6. Step 6: Final answer
    x = 106,682,595.60

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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.